?Weight: 250gDimensions: 9.84 in x 9.65 in x 2.36 in (25 cm x 24.5 cm x 6 cm)Brand：BIKEMANModel：YKGJ-B0011Quantity：1Color：Fluorescent Green + BlackMaterial: Nylon + OxfordShell Material: PC + ABSCommunication Mode：Wireless Frequency 2.4GHZControl Distance: 3mBackpack/Pendant: Waterproof FabricWorking Time: 20-30HCharging Time：3H（With LED Indicator Light）Remote Controller Battery: 2 x CR2032(Built-in)Remote Controller Waterproof Level：IPX-5Receiver Waterproof Level：IPX-2Receiver Battery: 3.7V， 850mAh lithium battery(Can charge on DC5V500mA adapter)Best Use: Mountain Cycling ， Road Cycling ， Bike commuting & touringPacking List:1 x Signal Lamp Vest1 x Remote Controller1 x Remote Controller Deck1 x USB Cable (50 cm)1 x Chinese Manual4 x Handlebar Binding Wire<img src="http://112.74.112.28/down/products/433994/433994_000.jpg">