1. offroad e bicycle with Own Exclusive Patent 2. 1:1 intelligent pedal assistant ... . Charger: 100-240V 47-63Hz12. Charging hours: 4-6h13. Transmission: Shimano 6 speed14. Brake: V Brake15. Trye: 16"*1.7516. Climbing ... , RoHs, FC, CSA, 3C, ISO9001, ISO9002 BFLEB20-001 offroad e bicycle with EN15194