?Weight: 128gDimensions: 7.68 in x 7.09 in x 1.57 in (19.5 cm x 18 cm x 4 cm)Brand：BIKEMANModel：YKMN-B0001Quantity：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: 4.2V， 650mAh lithium battery(Can charge on DC5V500mA adapter)Best Use: Mountain Cycling ， Road Cycling ， Bike commuting & touringNotice: Can not be sold in Britain， Germany and Canada， because they have agented for this brandPacking 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/433987/433987_000.jpg">