Name: USB Rechargeable taillight
Source: white， bright LED
The amount of light: 100 lumens (2000 Candlelight)
Charging: USB plug
Battery: Lithium-ion rechargeable battery (3.7V-800mAH)
Applicable Duration: about 2 hours ultrabright / 100 lumens
Flashes for about 30 hours / Max 150 lumens
Standard about 6 hours / 30 lumens
Charging time: about 3 hours (USB2.0 charging)