Certified Safety and Quality: SGS certified to UL2849/SGS certified to UL2271(Certificate Number. SGSNA/24/SZ/00323), (SGS-UL 2271 Certificate Number. SGSNA/24/SZ/00320U). POWERFUL 1475W PEAK MOTOR: Vivi fat tire electric bike is equipped with a high speed rated 750W motor(1475W peak). It can reach a top speed of 25 mph, provide powerful and efficient assistance to conquer hills and challenging terrains with ease. With 90Nm of torque, it's more than enough for daily riding on all terrains, ensuring an excellent off-road riding experience 48V 15AH REMOVABLE BATTERY: Ebike for adult comes with a 48V 15Ah removable battery, utilizing 21700 battery cells, which can travel 40-60 miles per full charge. The e-bike offers two charging options: charging the battery while it's on the bike or remove the battery for charging. It comes with a 3A charger that can quickly fully charge in 4-6 hours.The battery built into the body is designed to be both attractive and anti-theft PREMIUM CONFIGURATION: Electric bike uses an aluminum alloy frame, dual brakes and adjustable front suspension fork to provide stronger braking power and reduced inertia to handle greater weight and impact for worry-free ride. The professional 7-speed transmission system allows you to adjust gears for different terrains and conditions. This e-bike can support up to 330lbs, and the seat height is highly adjustable, suitable for riders from 5'3" to 6'5" ALL TERRAIN FAT TIRE MOUNTAIN BIKE: Electric mountain bike features 26* 4.0" fat tires that are wear-resistant, excellent grip and slip resistance, perfect for any road condition, including sand, snow, gravel and mountain paths