Built-in 4V 3000mAh head -acid rechargeable battery, long life spa, can be used circularly 500 times above, Super brightness white colour LE, Life span can reach 10,000 hours; low power consumption,...
Light source: 2x 40 Pcs 0.2W LEDSingle Side Lights: 50Hrs/WeakDouble Side Lights: 30Hrs/StrongDouble Side Lights: 1Hrs/StrongDuration, Single side lights: 1.5hrs/strongMicro USB line charger