Lithium ion (Li-ion) Button battery high energy density, and the voltage is 3.7 V.
1) High operation voltage.
2) Wide operation temperature range: -20?~+60?.
3) Non-magnetic stainless steel case, hermetically sealed.
4) No leakage problem.
Size: D24.5x H5.0 mm
Nominal Voltage: 3.7 V
Nominal Capacity: 170 mAh
Weight: 5.3 g
Bluetooth earphone, flashlight, watches, car key remotes, remote controls, toys and so on.