【Features】 Standard dynamo cable with wires ends. USB charger plug cable with wires ends. One time single use only. Either dynamo LED lighting or USB charging. Switch off LED light while USB power bank charging. Max power output DC6V3W at riding speed 20-25km/hr. 【Specifications】 Location: Rear Output: DC6V3W Weight of dynamo: 640g Working temp.: -25°C~65°C IP rating: IPX4 Patent: Main Countries warranty period: 1 year