About Product:Product attribute material ABS size 250*55 * 45mm current 1-5A voltage 12V power cord length 3M specification E68 silver wired style, E68-S silver wireless type, E68-I black high-end general-purpose model, E68-I silver high-end general-purpose model Net weight 675g type wired, wireless, universal two-in-one applicable range bicycle tire, ordinary car tire shape size 289*70 * 73mm packing size model E68 weight gross weight 770g, net weight 600g item No. E68 cylinder specifications single cylinder