Highlights It's made in Japan. It can be used in watch, calculator, some remote controls & other microamps level battery applications. Choose the right model of your applications & you will feel good service. Do not recharge or dispose of in fire. Keep in a dry & cool place. Specifications Weight Approx:0.6g/pc Size Approx:9.5x 9.5x 2.1mm/pc Model:SR920SW/371 Voltage: 1.55 V Service life:5 years