Features: 1. All aluminum alloy parts for sturdy structure and light weight, easy to carry 2. Stainless spoke ensure enough firmness and rustproof; reflective wheel for safety 3. Lithium battery for environmental-friendly design and longer usage life 4. Non-zero start for compliance with relative EU regulations and 1:1 power system (battery power: manpower) combining with ease from battery power and exercise from manpower 5. 130 degree maximum turning limit help to reduce inadvertent sharp swing of handle bar 6. Minimum 30 kilometers distance for pure battery powered running, minimum 60 kilometers distance for 1:1 power system (battery power: manpower) running 7. Inlet Shimano 3-speed shifter Parameter: 1. Battery capacity 24V-36V 10Ah (Li-ion) 2. Charge: AC100V-240V 50Hz-60Hz current <1.8A (motor at front wheel) 3. Motor power: 180W-240W (brushless) 4. Tyre size: 26" x 1.5, 26" x 1.75 5. Bicycle frame: 6061# aluminum alloy 6. Start mode: nonzero start, 1:1 assistan