Product Name: 20 Inch Fat Tire Foldable City Electric Bike Rear Motor with Lithium Battery Model NO.: SL-JK57362 Range per Power: 31-60km Max Speed: 20-40km/h Folded: Folded Certification: CE, ISO frame Material: Aluminum Motor: Brushless Wheel Size: 20" Battery Type: Lithium Battery Battery Voltage: 36V Wattage: >500W Tire: 20''x4.0 Brakes: Disc Brake Gear: Shimano Altus 7-Spped Battery: Battery-in-frame, 36V7, 8ah, LG Cell Fork: 20'', Aluminum Display: Kingmeter LCD Display, 6-Step Controller: Lishui Sine Wave Controller Trademark: Sevenone Specification: 20'', Aluminum Origin: China Product Description Folding,compact size for portable usage,Battery intergrated with frame.APK mini and light weighted motor with good performance.User-friendly and smart display operation,with walking mode and diagnostic avaible.Technology SpecificationColors: All YS series colors are available; matt, pearlised and metallic colors; double colors on request.Battery: Battery-in-frame,36v 10.4ah,LG cells. With smart protection in the condition of short circuit.Motor: Rear brushless hub motor 36V 500W Hub motor.Display: LED as standars, and LCD for option.Gear set: SHIMANO 7 gears;Brakes: front and rear disc brake, disc as option.Front Disc Brake