1.use electric and hydraulic.Germany Dunkeron motor with advanced hydraulictransmission. 2.350mm horizontal movement for C-arm 3.304 stainless steel for the cover of ABS base 4.backup battery for one week(80-100times) surgeries 5.lt has standard and reverse standard for headand foot exchange function. 6.One reset function,with two independantelectric controlling system. High density memorymattress.