A total of two brushless hub motors front and rear, lockable at 25 km/h (15.5 mph), with an impressive torque of 2 x 80 N-m and waterproof to IP64. Front/Rear/Dual Wheel Drive Modes Three driving modes: pure electric / with power assisted / powered by human power. In power assist mode, the motor support can be adjusted in 1-5 levels, making driving easier and more enjoyable. Equipped with a removable 48V 17.5Ah battery, which is built into the frame, waterproof, dustproof and theft-proof, it has excellent range stability and safety, and the combined range can reach 40-50 km. * Estimated battery life depends on weight, speed, temperature, wind, tire pressure, terrain, slope and other conditions. The mileage may vary. Equipped with double disc brakes front and rear. The brake system has the function of interrupting the power supply to the motor; when you press and hold the brake lever, the motor stops the power supply, which provides you with a fast and stable braking effect, extends the life of the brake pads and ensures driving safety. With Yolin colour display. Displays total mileage, battery power and speed. The display has three buttons located next to the left handlebar to control the electric and additional modes as well as turning the headlights on and off. Double-trained speed shock absorber. The shoulder fork made of high-quality aluminium alloy offers high strength and durability. Thanks to its light weight, you can enjoy better manoeuvrability and control without sacrificing performance or reliability. Shimano 7-speed gears with excellent shifting performance ensures a safe and stable ride. You can shift uphill to larger gears and into smaller gears at high speeds. In combination with the pedal support, you can set the right speed for your ride. The bike is 90% assembled, you just need to mount the plate, front wheel, wings and pedals when you receive it. Comes complete with wings and luggage rack, as well as LED headlights. The Shengmilo S600 electric mountain bike for adults has a sporty and minimalist look, equipped with a dual drive motor system with monster performance! Powerful performance and fun that you can't get enough of! The greatest fun is driving on the beach or in the snow, mountain roads, and also leave a good impression!