... product 3. international approvals 4. good performance 16" folding lithium battery electric bicycle♦Color: gladway blue, watermelon red, lemon yellow♦Size: ... high speed motor, 250W♦Max speed: 25km/h♦Battery: high performance ternary lithium battery, 24V/36V, optional♦Controller: brushless high speed ... ♦Optional device: Shimano outside seven speeds 16" folding lithium battery electric bicycle EN15194