... 3)250W-350w motor Electric bicycle EN15194 1)compact aluminum alloy frame 2) lithium battery3)250W-350w motor Electric systemMain components Motor ... Rust resistant chain. Throttle Twist intelligent speed control. Chain wheel Steel 36 T, al alloy crank.Performance Mudguard PP plastic ... rear light, tool kit, rack bag helmet. Gross weight 28.0kg including package. Lock water bottle,mini pump,speed meter ...