... . Size: 7.2*7.3cm 3. Waterproof 4. Rechargeable 1PCS LED Headlamp With Rechargable Battery 1.Use the safety, no pollution, no memory ... 800mAH.2. Long battery life,can be used circularly 300 times above.3. With 1W high power LED electronic spotlight, low power consumption ... .3.7V Lead-acid Rechargeable battery3. 2 choices for LEDS:strong beam and and weak beam4. When the battery is fully charged ...