... available. 2,batter:4.5AH,7AH &10AH are available. 1,electric scooter moter:100W,120W &150W are available. 2,batter:4.5AH ... ,7AH &10AH are available.3,braking: rear hub brake by hand.4,dimension of the ... ,9.recharge times:=>250s.10,material:aluminum wheel frame; inflatable wheels.11,drive system: synchronous belt or chain. electric scooter