Communication Mode: Wireless Frequency 2.4GHz
Control Distance: 3m
Backpack/Pendant: Waterproof Fabric
Working Time: 20-30H
Charging Time: 3H (With LED Indicator Light)
Remote Controller Battery: 2 x CR2032(Built-in)
Remote Controller Waterproof Level: IPX-5
Receiver Waterproof Level: IPX-2
Receiver Battery: 4.2V, 650mAh lithium battery(Can charge on DC5V 500mA adapter)
Best Use: Mountain Cycling , Road Cycling , Bike commuting & touring
Notice: Can not be sold in Britain, Germany and Canada, because they have agent for this brand