D4S Product Parameters Electric Bike System: FIIDO System Electric Motorcycle support Power Assist System 3 gear power boost Operating temperature -10-50 Maximum Speed: 25km/h Top Speed 30km/h Battery: high quality lion battery Input voltage 10 240V System voltage: 36V Amps: 10.4Ah Recharge Time: 7 hours Battery warranty: 1 years Electricity-assisted mileage (reference): 80KM Display: LCD Display Drive Type: Rear Drive Component warranty: 1 Year Frame Material: Aluminium Alloy Brake Type: Mechanical Disc Brakes Chainset: Steel 52 Tooth Gears: Shimano Chain: kmc Z7 Pedals Included: Yes Grips: Rubber Handlebars: Aluminium Alloy Pedals: Alloy Motor brushless gear motor Rear Hub: 250W motor Rims: Alloy Wheel Size: 20" Tyre Size: 20 1.75 inch Tyres: CST Frame warranty: 1 years Net Weight (KG): 18.8KG Gross Weight KG 22.5KG Saddle height 67cm 108cm Folded Size 85cm*45cm*64cm Size 150cm*26cm*108cm Pack Size 90cm*39cm*67cm D4S Features: 1 20 inch spoke wheels gross weight 18.8kg 2 Hidden 36V 10.4AH Battery pedal assist range about 80KM 3 Shimano 6 gears system 4 Easy to fold and unfold, can be put into rear car cage 5 Aluminum Alloy Frame 6 KMC durable chain