BK3M PRODUCT PARAMETERS Body Material - Carbon Structural Steel Unfolding Size1870mm'630mm'1100mm Hub Form - Spoke wheel Package Size1560mm'240mm'840mm Gross/Net83.22/64.70lbs Maximum Load120kg (264.55lbs) Maximum Speed19.9MPH Maximum Climbing Angle:25 degree Proper Temperature:-1045 Waterproof Level:IP54 Battery Typelithium ion power battery Battery Capacity15Ah Battery Rated Voltage36V Motor Rated Power500W Motor Form - Assist mode Charger Output42V 2.0A Charger Input100~240V 50/60Hz 3.0A Undervoltage Protection Value29V Charging Time:6-7h UL 2849 Certified UL 2849 Certification Number - STL2023S1101007C-S1 Reminder: You may receive a shock-absorbing saddle as a gift(random. The shock-absorbing saddle will be 3-5cm higher than the ordinary saddle. But there will be a more comfortable shock absorption effect.