{"title":"395 SR927SW \u0026 399 SR927W Watch Batteries","description":"\u003cp\u003eThe 395 battery, also known by its IEC code SR927SW, is a 1.55V silver oxide button cell measuring about 9.5mm across and 2.7mm thick. The 399, or SR927W, is exactly the same size. Here you will find every 395 \/ 399 watch battery we stock, from Renata, Maxell, Seiko, Murata and Seizaiken, so you can pick the brand you prefer.\u003c\/p\u003e\u003cp\u003eThe SW version is made for watches with a low power draw, such as most simple analogue quartz watches, while the W version suits watches that draw more power, for example those with alarms, backlights or chronograph functions. If you are not sure which you need, fit the same type as the battery that came out of your watch.\u003c\/p\u003e\u003cp\u003eUK delivery is free on every order, and orders placed before 2pm Monday to Friday are dispatched the same day.\u003c\/p\u003e","products":[{"product_id":"maxell-399-sr927w-1-55v-silver-oxide-mercury-free-watch-battery-made-in-japan","title":"Maxell 399 \/ SR927W Silver Oxide Watch Battery","description":"\u003cp\u003e\u003cstrong\u003eMaxell 399 \/ SR927W Silver Oxide Watch Battery\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eKeep your timepiece running accurately with the Maxell 399 \/ SR927W silver oxide cell. Stable voltage and dependable performance.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBattery size:\u003c\/strong\u003e 399 \/ SR927W\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChemistry:\u003c\/strong\u003e Silver Oxide\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUse:\u003c\/strong\u003e Suitable for a wide range of analogue and digital watches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShelf life:\u003c\/strong\u003e Fresh stock, typically 3–5 years\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackaging:\u003c\/strong\u003e Single retail pack (brand new, factory sealed)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003eTip:\u003c\/em\u003e Check your existing battery code or watch manual before ordering.\u003c\/p\u003e\n\u003cp\u003eFast UK dispatch from Chrono Straps UK.\u003c\/p\u003e","brand":"Maxell","offers":[{"title":"Default Title","offer_id":51338991894870,"sku":"MAXELL_399_SR927W","price":3.87,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0939\/1439\/9062\/files\/Maxell_399_SR927W_Silver_Oxide_Watch_Battery.png?v=1762511458"},{"product_id":"seizaiken-sr927w-silver-oxide-watch-battery-genuine-japan-made-399-long-lasting-power","title":"Seizaiken 399 \/ SR927W Silver Oxide Watch Battery","description":"\u003cp\u003e\u003cstrong\u003eSeizaiken 399 \/ SR927W Silver Oxide Watch Battery\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eKeep your timepiece running accurately with the Seizaiken 399 \/ SR927W silver oxide cell. Stable voltage and leak‑resistant design for dependable performance.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBattery size:\u003c\/strong\u003e 399 \/ SR927W\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChemistry:\u003c\/strong\u003e Silver Oxide\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUse:\u003c\/strong\u003e Suitable for a wide range of analogue and digital watches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShelf life:\u003c\/strong\u003e Fresh stock, typically 3–5 years\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackaging:\u003c\/strong\u003e Single retail pack (brand new, factory sealed)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003eTip:\u003c\/em\u003e Check your existing battery code or watch manual before ordering.\u003c\/p\u003e\n\u003cp\u003eFast UK dispatch from Chrono Straps UK.\u003c\/p\u003e","brand":"Seizaiken","offers":[{"title":"Default Title","offer_id":51357807575382,"sku":"SEIZAIKEN_399_SR927W","price":3.95,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0939\/1439\/9062\/files\/Seizaiken_by_Seiko_399_SR927W_Silver_Oxide_Watch_Battery.png?v=1762696435"},{"product_id":"seizaiken-sr927sw-silver-oxide-watch-battery-genuine-japan-made-395-long-lasting-power","title":"Seizaiken 395 \/ SR927SW Silver Oxide Watch Battery","description":"\u003cp\u003e\u003cstrong\u003eSeizaiken 395 \/ SR927SW Silver Oxide Watch Battery\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eKeep your timepiece running accurately with the Seizaiken 395 \/ SR927SW silver oxide cell. Stable voltage and leak‑resistant design for dependable performance.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBattery size:\u003c\/strong\u003e 395 \/ SR927SW\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChemistry:\u003c\/strong\u003e Silver Oxide\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUse:\u003c\/strong\u003e Suitable for a wide range of analogue and digital watches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShelf life:\u003c\/strong\u003e Fresh stock, typically 3–5 years\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackaging:\u003c\/strong\u003e Single retail pack (brand new, factory sealed)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003eTip:\u003c\/em\u003e Check your existing battery code or watch manual before ordering.\u003c\/p\u003e\n\u003cp\u003eFast UK dispatch from Chrono Straps UK.\u003c\/p\u003e","brand":"Seizaiken","offers":[{"title":"Default Title","offer_id":51360164446550,"sku":"SEIZAIKEN_395_SR927SW","price":3.95,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0939\/1439\/9062\/files\/Seizaiken_by_Seiko_395_SR927SW_Silver_Oxide_Watch_Battery.png?v=1762696221"},{"product_id":"seiko-399-sr927w-1-55v-silver-oxide-mercury-free-watch-battery-made-in-japan","title":"Seiko 399 \/ SR927W Silver Oxide Watch Battery","description":"\u003cp\u003e\u003cstrong\u003eSeiko 399 \/ SR927W Silver Oxide Watch Battery\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eKeep your timepiece running accurately with the Seiko 399 \/ SR927W silver oxide cell. Stable voltage and leak‑resistant design for dependable performance.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBattery size:\u003c\/strong\u003e 399 \/ SR927W\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChemistry:\u003c\/strong\u003e Silver Oxide\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUse:\u003c\/strong\u003e Suitable for a wide range of analogue and digital watches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShelf life:\u003c\/strong\u003e Fresh stock, typically 3–5 years\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackaging:\u003c\/strong\u003e Single retail pack (brand new, factory sealed)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003eTip:\u003c\/em\u003e Check your existing battery code or watch manual before ordering.\u003c\/p\u003e\n\u003cp\u003eFast UK dispatch from Chrono Straps UK.\u003c\/p\u003e","brand":"Seiko","offers":[{"title":"Default Title","offer_id":51368312537430,"sku":"SEIKO_399_SR927W","price":3.3,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0939\/1439\/9062\/files\/Seiko_399_SR927W_Silver_Oxide_Watch_Battery.png?v=1762699611"},{"product_id":"seiko-395-sr927sw-1-55v-silver-oxide-mercury-free-watch-battery-made-in-japan","title":"Seiko 395 \/ SR927SW Silver Oxide Watch Battery","description":"\u003cp\u003e\u003cstrong\u003eSeiko 395 \/ SR927SW Silver Oxide Watch Battery\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eKeep your timepiece running accurately with the Seiko 395 \/ SR927SW silver oxide cell. Stable voltage and leak‑resistant design for dependable performance.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBattery size:\u003c\/strong\u003e 395 \/ SR927SW\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChemistry:\u003c\/strong\u003e Silver Oxide\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUse:\u003c\/strong\u003e Suitable for a wide range of analogue and digital watches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShelf life:\u003c\/strong\u003e Fresh stock, typically 3–5 years\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackaging:\u003c\/strong\u003e Single retail pack (brand new, factory sealed)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003eTip:\u003c\/em\u003e Check your existing battery code or watch manual before ordering.\u003c\/p\u003e\n\u003cp\u003eFast UK dispatch from Chrono Straps UK.\u003c\/p\u003e","brand":"Seiko","offers":[{"title":"Default Title","offer_id":51368633794902,"sku":"SEIKO_395_SR927SW","price":3.21,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0939\/1439\/9062\/files\/Seiko_395_SR927SW_Silver_Oxide_Watch_Battery.png?v=1762699450"},{"product_id":"maxell-395-sr927sw-1-55v-silver-oxide-mercury-free-watch-battery-made-in-japan","title":"Maxell 395 \/ SR927SW Silver Oxide Watch Battery","description":"\u003cp\u003e\u003cstrong\u003eMaxell 395 \/ SR927SW Silver Oxide Watch Battery\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eKeep your timepiece running accurately with the Maxell 395 \/ SR927SW silver oxide cell. Stable voltage and dependable performance.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBattery size:\u003c\/strong\u003e 395 \/ SR927SW\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChemistry:\u003c\/strong\u003e Silver Oxide\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUse:\u003c\/strong\u003e Suitable for a wide range of analogue and digital watches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShelf life:\u003c\/strong\u003e Fresh stock, typically 3–5 years\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackaging:\u003c\/strong\u003e Single retail pack (brand new, factory sealed)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003eTip:\u003c\/em\u003e Check your existing battery code or watch manual before ordering.\u003c\/p\u003e\n\u003cp\u003eFast UK dispatch from Chrono Straps UK.\u003c\/p\u003e","brand":"Maxell","offers":[{"title":"Default Title","offer_id":51369968763222,"sku":"MAXELL_395_SR927SW","price":3.29,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0939\/1439\/9062\/files\/Maxell_395_SR927SW_Silver_Oxide_Watch_Battery.png?v=1762511326"},{"product_id":"murata-399-395-sr927w-1-55v-silver-oxide-mercury-free-watch-battery-made-in-japan","title":"Murata 399 \/ 395 \/ SR927W \/ SR927SW Silver Oxide Watch Battery","description":"\u003cp\u003e\u003cstrong\u003eMurata 399 \/ 395 \/ SR927W \/ SR927SW Silver Oxide Watch Battery\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eKeep your timepiece running accurately with the Murata 399 \/ 395 \/ SR927W \/ SR927SW silver oxide cell. Stable voltage and dependable performance.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBattery size:\u003c\/strong\u003e 399 \/ 395 \/ SR927W \/ SR927SW\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChemistry:\u003c\/strong\u003e Silver Oxide\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUse:\u003c\/strong\u003e Suitable for a wide range of analogue and digital watches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShelf life:\u003c\/strong\u003e Fresh stock, typically 3–5 years\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackaging:\u003c\/strong\u003e Single retail pack (brand new, factory sealed)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003eTip:\u003c\/em\u003e Check your existing battery code or watch manual before ordering.\u003c\/p\u003e\n\u003cp\u003eFast UK dispatch from Chrono Straps UK.\u003c\/p\u003e","brand":"Murata","offers":[{"title":"Default Title","offer_id":51374798471510,"sku":"MURATA_399_395_SR927W_SR927SW","price":3.64,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0939\/1439\/9062\/files\/Murata_399_395_SR927W_SR927SW_Silver_Oxide_Watch_Battery.png?v=1762708703"},{"product_id":"renata-395-sr927sw-1-55v-silver-oxide-mercury-free-watch-battery-made-in-switzerland","title":"Renata 395 \/ SR927SW Swiss Made Silver Oxide Watch Battery","description":"\u003cp\u003e\u003cstrong\u003eRenata 395 \/ SR927SW Swiss Made Silver Oxide Watch Battery\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eKeep your timepiece running accurately with the Renata Swiss Made 395 \/ SR927SW Silver Oxide Watch Battery. High quality Swiss Battery, Stable voltage and leak-resistant design for dependable performance.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBattery size:\u003c\/strong\u003e 395 \/ SR927SW \u003cbr\u003e\u003cstrong\u003eChemistry:\u003c\/strong\u003e Silver Oxide \u003cbr\u003e\u003cstrong\u003eUse:\u003c\/strong\u003e Suitable for a wide range of analogue and digital watches \u003cbr\u003e\u003cstrong\u003eShelf life:\u003c\/strong\u003e Fresh stock, typically 3-5 years \u003cbr\u003e\u003cstrong\u003ePackaging:\u003c\/strong\u003e Single retail pack (brand new, factory sealed)\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003ePlease note:\u003c\/strong\u003e Renata batteries may be supplied in either \u003cstrong\u003ewhite\u003c\/strong\u003e or \u003cstrong\u003eblue\u003c\/strong\u003e genuine Renata blister packaging depending on the manufacturer's wholesale packaging. The battery supplied is identical in specification and quality.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eTip:\u003c\/em\u003e Check your existing battery code or watch manual before ordering.\u003c\/p\u003e\n\u003cp\u003eFast UK dispatch from Chrono Straps UK.\u003c\/p\u003e","brand":"Renata","offers":[{"title":"Default Title","offer_id":51763973554518,"sku":"RENATA_395_SR927SW","price":3.3,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0939\/1439\/9062\/files\/Renata_395_SR927SW.png?v=1762299983"},{"product_id":"renata-399-sr927w-1-55v-silver-oxide-mercury-free-watch-battery-made-in-switzerland","title":"Renata 399 \/ SR927W Swiss Made Silver Oxide Watch Battery","description":"\u003cp\u003e\u003cstrong\u003eRenata 399 \/ SR927W Swiss Made Silver Oxide Watch Battery\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eKeep your timepiece running accurately with the Renata Swiss Made 399 \/ SR927W Silver Oxide Watch Battery. High quality Swiss Battery, Stable voltage and leak-resistant design for dependable performance.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBattery size:\u003c\/strong\u003e 399 \/ SR927W \u003cbr\u003e\u003cstrong\u003eChemistry:\u003c\/strong\u003e Silver Oxide \u003cbr\u003e\u003cstrong\u003eUse:\u003c\/strong\u003e Suitable for a wide range of analogue and digital watches \u003cbr\u003e\u003cstrong\u003eShelf life:\u003c\/strong\u003e Fresh stock, typically 3-5 years \u003cbr\u003e\u003cstrong\u003ePackaging:\u003c\/strong\u003e Single retail pack (brand new, factory sealed)\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003ePlease note:\u003c\/strong\u003e Renata batteries may be supplied in either \u003cstrong\u003ewhite\u003c\/strong\u003e or \u003cstrong\u003eblue\u003c\/strong\u003e genuine Renata blister packaging depending on the manufacturer's wholesale packaging. The battery supplied is identical in specification and quality.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eTip:\u003c\/em\u003e Check your existing battery code or watch manual before ordering.\u003c\/p\u003e\n\u003cp\u003eFast UK dispatch from Chrono Straps UK.\u003c\/p\u003e","brand":"Renata","offers":[{"title":"Default Title","offer_id":51763973816662,"sku":"RENATA_399_SR927W","price":3.38,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0939\/1439\/9062\/files\/Renata_399_SR927W.png?v=1762300061"},{"product_id":"renata-premium-395-sr927sw-1-55v-silver-oxide-mercury-free-watch-battery-made-in-switzerland","title":"Renata Premium 395 \/ SR927SW Swiss Made Silver Oxide Watch Battery","description":"\u003cp\u003e\u003cstrong\u003eRenata Premium 395 \/ SR927SW  Swiss Made Silver Oxide Watch Battery\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eKeep your timepiece running accurately with the Renata Swiss Made Premium 395 \/ SR927SW  Silver Oxide Watch Battery. High quality Swiss Battery, Stable voltage and leak-resistant design for dependable performance.\u003c\/p\u003e\n\u003cul\u003e\n\u003cp\u003e\u003cstrong\u003eBattery size:\u003c\/strong\u003e 395 \/ SR927SW\n\u003cbr\u003e\u003cstrong\u003eChemistry:\u003c\/strong\u003e Silver Oxide\n\u003cbr\u003e\u003cstrong\u003eUse:\u003c\/strong\u003e Suitable for a wide range of analogue and digital watches\n\u003cbr\u003e\u003cstrong\u003eShelf life:\u003c\/strong\u003e Fresh stock, typically 3-5 years\n\u003cbr\u003e\u003cstrong\u003ePackaging:\u003c\/strong\u003e Single retail pack (brand new, factory sealed)\n\u003c\/p\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003eTip:\u003c\/em\u003e Check your existing battery code or watch manual before ordering.\u003c\/p\u003e\n\u003cp\u003eFast UK dispatch from Chrono Straps UK.\u003c\/p\u003e","brand":"Renata","offers":[{"title":"Default Title","offer_id":51763975520598,"sku":"RENATA_PREMIUM_395_SR927SW","price":3.72,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0939\/1439\/9062\/files\/Renata_395_SR927SW_2.png?v=1763139081"}],"url":"https:\/\/www.chronostraps.co.uk\/collections\/395-sr927sw-watch-battery.oembed","provider":"Chrono Straps UK","version":"1.0","type":"link"}