What more can I say! Half the price of most other electic bikes and manufactured to a good standard. As a professional engineer I can confirm that the level of design and manufacturing quality built into this bike is exceptional. Nearly every part is aluminium or stainless steel, except the mudguards. Pity that the gear shift is not epicyclic which would make it less vunerable to damage, but that’s nit-picking and at this price who’s quibbling!!!Joseph P W Baker