18650 Lithium Battery 48V20Ah 18650 lithium battery, integrated IP54 waterproof frame design, Pure electric driving can achieve a range of 90 km, and assisted driving can reach a range of 180 km,Equipped with a 3A wired fast charger to prevent overcharging. It can be plugged directly into the charging port in the body and removed for charging. Hydraulic Disc Brake Equipped with the DYISLAND power-off hydraulic disc brake system, the front and rear dual disc brake system provides a durable disc brake with rapid heat dissipation. Pressing the front and rear brake levers also provides effective and smooth emergency braking. Night Lighting System LED headlights feature a wide illumination range. When riding in the dark or at night, turn on your headlights and taillights to remind pedestrians and vehicles to ride safely. LCD Display Smart instrument, new interactive interface, LCD display, playback, integrated gear shift, bike data display, output power adjustment. IP64 WA dustproof and dust protection quality at a glance. SHIMANO 7-Speed Gear System Optional imported Shimano 7-speed gear system, custom 52T aluminum crankset. Following the classic coordination of front 1 and rear 7-speed, the SIS position is durable, and the 7th gear significantly enhances riding pleasure. Specification: Brand: Cheevalry Model: C20 PRO Frame material: Aluminum alloy Motor power: 250W Battery capacity: 48V20AH Tire size: 20*3.0'' Maximum Torque:53Nm Charger:54.6V 3.0A Maximum speed: 25km/h Pure electric range: 50-70km (calculated with 65kg) Maximum assisted range: 90-180km Maximum load-bearing capacity of the vehicle: 130kg Applicable height: 160-195cm Charging time: 5-7h Transmission: 7 speeds Brake type: oil brake Throttle type: throttle Lowest height of saddle from the ground: 83cm Highest height of saddle from the ground: 98cm Lowest height of handlebar from the ground: 112cm Highest height of handlebar from the ground: 117cm Net weight: 28kg Gross weight: 35.6kg Vehicle dimensions : 170*40*112cm Folding dimensions: 95*45*75cm Packing box dimensions : 141*24*71cm Package included: 1*Electric bicycle 1*Battery 1*Instruction manual 1*Lock 1*Tools 1*Bell 1*Back pedal 1*Pump 1*Bottle holder 1*Fender