1.Shimano 7 Speed system 2.Alloy shock fork, disc brake, handlebar ... 8Ah lead-a Specification: 1.Shimano 7 Speed system 2.Alloy shock fork, disc brake, handlebar, ... rim, hub, crankset, pedal 3.Build-in pedal assist system 4.Travelling distance: ≥50km 5.Max Speed: ... as required 6.Max Load: ≥75kg Optional package: front LED lamp with build-in ...