High-Torque Brushless Motor System Equipped with a 36V 250W high-power brushless motor delivering 58N·m peak torque, effortlessly conquers 15° slopes and rugged terrain. Features torque-sensing pedal assist for smooth power delivery, reaching 25km/h max speed. Long-Range 36V Lithium Battery 36V 25Ah automotive-grade Li-ion battery provides 80-100km per charge (75kg load/flat road). IP67 waterproof battery case with 5-hour fast charging, ideal for extended commuting and adventure cycling. All-Terrain Fat Tire Electric Bike 20"x4.0" KENDA fat tires enhance traction by 40% on sand/snow/mountain trails. Paired with dual-piston hydraulic disc brakes reducing braking distance by 30%, ensuring off-road bicycle safety. Ergonomic Adjustable E-Bike Frame Aluminum alloy frame fits riders 155-190cm with 150kg load capacity. Features adjustable saddle, shock-absorbing front fork, and LCD display showing speed/battery/PAS modes/dual odometers. 5-Level Smart Pedal Assist System 5 PAS modes with automatic torque adjustment algorithm. Seamless switching between pure-electric/assist/fitness modes. Beginner-friendly controls with trip/ODO tracking for urban commuting bikes. Specification Brand: TTGO Type: Electric Bike Model: F6 Material: 20 Inch Aluminous Alloy Frame Motor: 36V 250W Motor Sensor: Torque Sensor Max Torque: 58 Nm Tires: 20*4.0 Fat Tire Lights: 1.5W Led Headlight Transmission System: Shimano 7-Speed Brake: Hydraulic Disc Brakes Battery: LG Battery Cells 25 Ah Speed: 25km/h Range: 80-100km Charging Time: About 4-6H Display: LCD Color Display Max Load: 150kg Suitable for Rider's Height:155-190cm Product Weight: 33.5kg Package Weight: 40.5kg Product Size:167*66*134cm Package Size:140*30*72cm