1) Two wheels hover board with Lithium-ion battery 36V 4.4Ah 2) Working temperature: 0°C-40°C 3) This scooter uses gyroscope sensors to enable self-balancing The inner workings of the hover board use gyro sensors, two 250 watts motors and a set of rechargeable lithium battery 4) Users can control the vehicle to go forward, accelerate, decelerate, turn around, bread or others by leaning forward or leaning backwards 5) With a full charge it has a range of roughly 15 km and a highest speed at 10km/h 6) The hover boards are green product helpful tool in outdoor, and easy for carry. Also can be a funny entertainment tool as well as skateboard. 7) For your safety it is recommended to wear protective gear such as a helmet, elbow pads, knee pads and more when operating hover board 8) Do not use the balance scooter as a means of public transportation. The device is mean for personal entertainment only. 9) Do not use balance scooter if you have a history of heart disease, high blood pressure, or are pregnant/nursing 10) The maximum speed of the hover board is approximately 10 kilometers per hour, or 6 miles per hour. 11) Certifications: CE, RoHs, FCC & UL2272