Product model: WQ - 601 top speed: about 18 km/hour  12 km/h (start alarm) distance: about 25 to 35 km (depending on the rider weight  riding and traffic environment) maximum climbing Angle: about 15 ° and 30 ° (because of the body weight and decide) battery: 210 watts when lithium batteries  battery protection board have balanced function) trial: temperature - 10 ℃ and 40 ℃ (the most suitable for trial temperature 10 to 30 ℃) weight: 120 kg charger voltage: AC220V50-60 hz charging time: about 120-150 minutes 12 km/H speed limit protection: more than open (pedal recently began to sink, gradually slow down and eventually stop) low battery protection: battery remaining 10% depending on the open (pedal recently began to sink  gradually slow down and eventually stop) size: 480 mm  375 mm long (maximum thickness is 163 mm  the minimum thickness of 163 mm) pedal distance from the earth: 112 mm (no load condition) tire size: 14 inch body weight: 10.1 KG (excluding training wheels) power supply: the power switch LED flashing (boot normally on ) power: power indicator light LDE (about 85%  four LED lights all light) as power decline gradually extinguished Boot: drops of sound (boot drops of voice prompts  low battery protection when continuous drip) tilt protection: the shedding (roll sirens) standard: charger  training wheels  auxiliary belt