Specifications:

• Battery Capacity: 4000mAh
• Brand Name: Liter energy battery
• Charging Voltage: 3.7~4.2V
• Dimensions(L*W*H): About 100x50x5mm/3.94x1.97x0.20
• Model: 5050100 Polymer battery
• Model Number: 5050100
• Package: Yes
• Rechargeable: Yes
• Type: Standard Battery
• Use A: Smart watch, wireless mouse, mobile backup power, MP3&MP4&MP5 players
• Use B: Selfie stick, Bluetooth speaker, toy and other electronic devices.
• Use C: Bluetooth headset, mobile speaker, amplifier,navigation system (GPS),
• Use: MP3 / MP4 Player
• Working Voltage: 3.7V