Murata button cell and coin battery line-up Murata Watch Batteries (SR) Enjoy dependable power that keeps your watch and other devices running reliably. Murata's unique sealing structure means you can worry less about leakage and damage to your devices over time. Murata silver-oxide watch batteries are trusted as original equipment by watch manufacturers in one out of every two watches sold. Available in a wide range of sizes including 357/303 (SR44), 371 (SR920), 377 (SR626), 391 (SR1120/SR1121), and many others. Murata Alkaline Batteries (LR) Murata's precision power ensures your devices run accurately when you need them most. With manganese dioxide as a cathode material and zero mercury, you will also experience high performance, stable voltage output, and maximum safety. Murata alkaline batteries fully comply to EC regulations on hazardous substances. We stock all the popular models including LR41, LR43, LR44, LR1120, LR1130, and more. Murata Lithium Batteries (CR) Cut the number of batteries and the time you need to replace them in half. With double the voltage of alkalines, power your IoT keyless and security devices, medical and health appliances, backup power sources, remote control devices, and even toys and watches, with Murata's UL-approved lithium batteries (UL1642 File No. MH12566). Our wide range includes popular sizes such as CR1216, CR1220, CR1620, CR1632, CR2016, CR2025, CR2032, CR2450, and many others. MURATA CHECKPOINTS High performance cells for watches, health and security devices, toys, IoT devices, automotive, and more Superior anti-swelling and anti-leakage resistance Ecologically safe: 100% cadmium, lead, and mercury-free Quality manufactured under stringent control and advanced assembly in Japan (LR and SR) and Indonesia (CR) ISO-9001, ISO-14001, and ISO-TS16949 certified With over 40 years of technology development and battery manufacturing expertise, SONY trusts Murata. Shouldn't you? Select from a range of power options that zero in on performance and reliability. Based in Japan, Murata introduced silver-oxide and alkaline batteries in 1978, lithium batteries in 2008, and pioneered environmental technology to all button cells in 2009. Murata batteries feature state-of-the-art design, innovative production technologies, and patented assembly. Murata is certified for technical quality and environmental management. SONY transferred its micro-battery division to Murata in 2017. Murata Size 379 (SR521SW) Murata Size 321 (SR616SW) Murata Size 364 (SR621SW) Murata Size 377 (SR626SW) Murata Size 371 (SR920SW) Murata Size 399/395 (SR927W/SW) Add to Cart Add to Cart Add to Cart Add to Cart Add to Cart Add to Cart Customer Reviews 4.4 out of 5 stars 527 4.7 out of 5 stars 752 4.6 out of 5 stars 1,653 4.7 out of 5 stars 753 4.3 out of 5 stars 1,092 4.6 out of 5 stars 690 Price $4.28$4.28 $3.88$3.88 $2.58$2.58 $3.60$3.60 $3.53$3.53 $5.99$5.99 Voltage 1.55 V 1.55 V 1.55 V 1.55 V 1.55 V 1.55 V Capacity 16 mAh 16 mAh 18 mAh 28 mAh 35 mAh 52 mAh Diameter 0.228 in. / 5.8 mm 0.268 in. / 6.8 mm 0.268 in. / 6.8 mm 0.268 in. / 6.8 mm 0.374 in. / 9.5 mm 0.374 in. / 9.5 mm Height 0.081 in. / 2.0 mm 0.065 in. / 1.6 mm 0.081 in. / 2.0 mm 0.106 in. / 2.7 mm 0.081 in. / 2.0 mm 0.106 in. / 2.7 mm IEC Model SR521 SR616 SR621 SR626 SR920 SR927