aluminum alloy frame lithium battery (36V10Ah) front and rear V brake, LED meter, Shimano 6 speed new best E-bike 250w1. Luxury electrical city bike with 6061 aluminum alloy frame, lithium battery (36V10Ah), Al- alloy seat post and handlebar, front and rear V brake, LED meter, Shimano 7 speed2. We control the e-bike quality by our self, so we choose the famous brand parts for our customers, such ...