Equipped with a built-in smart protective PCB charging module, they safeguard against overcharging, over-discharging, overcurrent, and short circuits, ensuring safe and efficient use. PICK UP OPTION.
3.7V 130mAh LiPo 1S Polymer Rechargeable Battery: GPS Watch MP3 Speaker - 362022
Pebble P121112 Watch Battery: 401S, Steel, E-Paper - 3.7V 130mAh PEB112SH 402020