500W High-Torque Motor & 65NM Power Conquer 30°slopes effortlessly with this high-torque electric bike for urban commuting, featuring a 65NM brushless motor and Shimano 7-speed transmission system for adaptive riding. 48V 18Ah Long-Range Battery Achieve 90km extended range in pedal-assist mode with long-distance e-bikes equipped with smart energy management, ideal for daily commutes or weekend adventures. 20x4.0 All-Terrain Fat Tires Navigate city streets/gravel paths confidently with fat tire electric bikes for adults, combining puncture-resistant 4-inch tires and IPX4 water-resistant construction. Smart Braking System & Adjustable Modes Ensure safety with electric bicycles with dual disc brakes, offering instant power-off response and 4-speed smart controller (0-25km/h adjustable). APP-Connected E-Bike with 760-960mm Seat Customize riding via Bluetooth APP on this height-adjustable electric bike, featuring 160-200cm rider compatibility and 120kg payload capacity. Specification: Brand: Onesport Model:OT08 Frame:All-aluminum alloy frame Motor:48V 500W Battery:48V 18AH Range:35-45km(Pure electric mode),80-90km(Assist mode ) Tyre Size:20*4.0 inches Sensor:Speed sensor Speed:Speed limit 25km/h Torque:65NM Brakes:Left and right power-off brake handles, front and rear disc oil brakes Angle of climb:Maximum climbing angle 30°(Suitable for medium urban slopes) Rider Heights:160-200cm Weight Capacity:120kg Waterproof class:IPX4(Light rain or rain splashing is OK, but not direct flushing or rain) Controller:4 gears, 0 gear without power assist, 1 gear 0~10KM/h, 2 gear 0~18KM/h, 3 gear 0~25KM/h" Battery Charger:54.6V 2A Charger Time:8-10H Smart Connect:Does support Bluetooth connection APP Transmission:Shimano 1*7 speed Brake disc:Disc diameter 180MM*2.3MM thickness Tail Light:with brake light/high brightness when braking Saddle:Adjustable Height Range: (Seat Height 760-960mm) Net Weight:37.5kg Gross weight:43.7kg Product size:1775*710*1270mm (handlebar length: 71cm) Packing size: 1480*310*780mm Package content: Complete vehicle bell air pump charger instruction manual installation tool kit mobile phone holder kit