Specifications:

Front Light (USB Rechargeable)
Material: PC+ABS
Size: Approx.65mmx29mmx23mm
Light Source: XPE 3W LED
Lighting Distance: 30-50meters at night
Charging Time: Approx.3hours
Running Time:
High: 3 Hours
Medium: 5 Hours
Flashing: 12 Hours
Fit Handlebar: 20-40mm

Rear Light (USB Rechargeable)
Size: Approx.7.532cm
Bulb Type: LED
Color: Red
Mounting Placement: Bicycle Seat Post

Suitable Tube Diameter: Approx.12-32mm

Features:
USB rechargeable bicycle taillight and auto cut off when fully charged.
High quality internal lithium battery,only need about 2 hours to be fully
charged while be used for about 12 hours.
4 modes: Long Bright, slow flash, explosion flash and strobe.
Super waterproof, make you riding freely regardless of rain.
High brightness and energy saving LED.

Package included:

1 x Bike light

1 x USB Cable