Bicycles are light; electric bikes are labor-saving and fast, but they are bulkier. The electric assist device below - Rubbee can easily turn your bicycle into an electric bicycle. The rubber roller of this device can provide power for the bicycle. When in use, the roller is in contact with the rear tire, and the front buckle is fixed on the seat pole. The bicycle suddenly has an "engine" and is easy to disassemble. The device has a built-in 20,000 mAh lithium-ion battery, which can be charged and discharged up to 2,000 times, has a lifespan of up to 5 years, takes only 2 hours to charge, and has a top speed of 25 kilometers per hour. The device is designed to be waterproof, so you don’t have to worry even on rainy days. Worth buying for office workers.
