USB rechargeable 3.7V 1200mAh Lithium-ion battery. Dual LED light outputs: 200 lumens COB LED and 100 lumens LED. Ideal for cyclists, outdoor activities, DIY&household use. 1 x USB charging cable included. Specification:. 200 lumens COB LED output. 100 lumens LED output. 3.7V 1200mAh Lithium-ion battery. Durable ABS case. Impact resistant polycarbonate lens. Average charging time: 2.5 hours. Charging circuit overload protected. Micro USB charging socket. Warning: Powerful light beam. Do not look directly at the light or direct the light at others..