{"title":"362 SR721SW \u0026 361 SR721W Watch Batteries","description":"\u003cp\u003eThe 362 battery, also known by its IEC code SR721SW, is a 1.55V silver oxide button cell measuring about 7.9mm across and 2.1mm thick. The 361, or SR721W, is exactly the same size. Here you will find every 362 \/ 361 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":"seizaiken-sr721sw-silver-oxide-watch-battery-genuine-japan-made-362-long-lasting-power","title":"Seizaiken 362 \/ SR721SW Silver Oxide Watch Battery","description":"\u003cp\u003e\u003cstrong\u003eSeizaiken 362 \/ SR721SW Silver Oxide Watch Battery\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eKeep your timepiece running accurately with the Seizaiken 362 \/ SR721SW 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 362 \/ SR721SW\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":51360167854422,"sku":"SEIZAIKEN_362_SR721SW","price":2.94,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0939\/1439\/9062\/files\/Seizaiken_by_Seiko_362_SR721SW_Silver_Oxide_Watch_Battery.png?v=1762694701"},{"product_id":"seizaiken-sr721w-silver-oxide-watch-battery-genuine-japan-made-361-long-lasting-power","title":"Seizaiken 361 \/ SR721W Silver Oxide Watch Battery","description":"\u003cp\u003e\u003cstrong\u003eSeizaiken 361 \/ SR721W Silver Oxide Watch Battery\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eKeep your timepiece running accurately with the Seizaiken 361 \/ SR721W 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 361 \/ SR721W\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":51360167985494,"sku":"SEIZAIKEN_361_SR721W","price":3.23,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0939\/1439\/9062\/files\/Seizaiken_by_Seiko_361_SR721W_Silver_Oxide_Watch_Battery.png?v=1762694616"},{"product_id":"seiko-362-sr721sw-1-55v-silver-oxide-mercury-free-watch-battery-made-in-japan","title":"Seiko 362 \/ SR721SW Silver Oxide Watch Battery","description":"\u003cp\u003e\u003cstrong\u003eSeiko 362 \/ SR721SW Silver Oxide Watch Battery\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eKeep your timepiece running accurately with the Seiko 362 \/ SR721SW 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 362 \/ SR721SW\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":51368317124950,"sku":"SEIKO_362_SR721SW","price":2.8,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0939\/1439\/9062\/files\/Seiko_362_SR721SW_Silver_Oxide_Watch_Battery.png?v=1762697650"},{"product_id":"seiko-361-sr721w-1-55v-silver-oxide-mercury-free-watch-battery-made-in-japan","title":"Seiko 361 \/ SR721W Silver Oxide Watch Battery","description":"\u003cp\u003e\u003cstrong\u003eSeiko 361 \/ SR721W Silver Oxide Watch Battery\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eKeep your timepiece running accurately with the Seiko 361 \/ SR721W 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 361 \/ SR721W\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":51368317288790,"sku":"SEIKO_361_SR721W","price":2.86,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0939\/1439\/9062\/files\/Seiko_361_SR721W_Silver_Oxide_Watch_Battery.png?v=1762697596"},{"product_id":"maxell-362-sr721sw-1-55v-silver-oxide-mercury-free-watch-battery-made-in-japan","title":"Maxell 362 \/ SR721SW Silver Oxide Watch Battery","description":"\u003cp\u003e\u003cstrong\u003eMaxell 362 \/ SR721SW Silver Oxide Watch Battery\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eKeep your timepiece running accurately with the Maxell 362 \/ SR721SW silver oxide cell. Stable voltage and dependable performance.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBattery size:\u003c\/strong\u003e 362 \/ SR721SW\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":51369970106710,"sku":"MAXELL_362_SR721SW","price":3.5,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0939\/1439\/9062\/files\/Maxell_362_SR721SW_Silver_Oxide_Watch_Battery.png?v=1762507625"},{"product_id":"murata-361-sr721w-1-55v-silver-oxide-mercury-free-watch-battery-made-in-japan","title":"Murata 361 \/ SR721W Silver Oxide Watch Battery","description":"\u003cp\u003e\u003cstrong\u003eMurata 361 \/ SR721W Silver Oxide Watch Battery\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eKeep your timepiece running accurately with the Murata 361 \/ SR721W silver oxide cell. Stable voltage and dependable performance.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBattery size:\u003c\/strong\u003e 361 \/ SR721W\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":51374797455702,"sku":"MURATA_361_SR721W","price":3.78,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0939\/1439\/9062\/files\/Murata_361_SR721W_Silver_Oxide_Watch_Battery.png?v=1762707701"},{"product_id":"murata-362-sr721sw-1-55v-silver-oxide-mercury-free-watch-battery-made-in-japan","title":"Murata 362 \/ SR721SW Silver Oxide Watch Battery","description":"\u003cp\u003e\u003cstrong\u003eMurata 362 \/ SR721SW Silver Oxide Watch Battery\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eKeep your timepiece running accurately with the Murata 362 \/ SR721SW silver oxide cell. Stable voltage and dependable performance.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBattery size:\u003c\/strong\u003e 362 \/ SR721SW\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":51374797554006,"sku":"MURATA_362_SR721SW","price":3.33,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0939\/1439\/9062\/files\/Murata_362_SR721SW_Silver_Oxide_Watch_Battery.png?v=1762707755"},{"product_id":"renata-361-sr721w-1-55v-silver-oxide-mercury-free-watch-battery-made-in-switzerland","title":"Renata 361 \/ SR721W Swiss Made Silver Oxide Watch Battery","description":"\u003cp\u003e\u003cstrong\u003eRenata 361 \/ SR721W Swiss Made Silver Oxide Watch Battery\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eKeep your timepiece running accurately with the Renata Swiss Made 361 \/ SR721W 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 361 \/ SR721W \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":51763970572630,"sku":"RENATA_361_SR721W","price":3.88,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0939\/1439\/9062\/files\/Renata_361_SR721W.png?v=1762298928"},{"product_id":"renata-362-sr721sw-1-55v-silver-oxide-mercury-free-watch-battery-made-in-switzerland","title":"Renata 362 \/ SR721SW Swiss Made Silver Oxide Watch Battery","description":"\u003cp\u003e\u003cstrong\u003eRenata 362 \/ SR721SW Swiss Made Silver Oxide Watch Battery\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eKeep your timepiece running accurately with the Renata Swiss Made 362 \/ SR721SW 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 362 \/ SR721SW \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":51763970703702,"sku":"RENATA_362_SR721SW","price":3.07,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0939\/1439\/9062\/files\/Renata_362_SR721SW.png?v=1762298962"},{"product_id":"renata-premium-362-sr721sw-1-55v-silver-oxide-mercury-free-watch-battery-made-in-switzerland","title":"Renata Premium 362 \/ SR721SW Swiss Made Silver Oxide Watch Battery","description":"\u003cp\u003e\u003cstrong\u003eRenata Premium 362 \/ SR721SW  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 362 \/ SR721SW  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 362 \/ SR721SW\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":51764096401750,"sku":"RENATA_PREMIUM_362_SR721SW","price":3.38,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0939\/1439\/9062\/files\/Renata_362_SR721SW_2.png?v=1763138966"}],"url":"https:\/\/www.chronostraps.co.uk\/collections\/362-sr721sw-watch-battery.oembed","provider":"Chrono Straps UK","version":"1.0","type":"link"}