Self- Power Generator UPS : Rechargeable sealed lead-acid battery, 6V. Power Back-Ip : Emergency Adaptor 9V (AC/DC) Pedals : Large with rubber cushion pad Aluminum Rail Bearings : All the joint in bearing movement Stride Length : 18â?? Display Shows : Speed, Time, Distance, Body Fat Calorie & Pulse Program : 5 - Preset Program, USB Mobile Charger, Mp3 Audio System PRICE IS NEGOTIABLE