shock-proof,fixed anode ,whole-rectifiedcomposed head and have both remote control and handlecontrol,dependable brake ,stable petformance,easy operation,graceful model and easy movement .SPECIFICATIONS:power supply :220v± 10%,50hz ,4kvaoutput power:3kwtube voltage:40-90kvptu current:15ma (50kv-90kv) 30ma (50kv-90kv) 50ma (40kv-80kv)exposure time:0.1-6.3 sec(15ma 30ma) 0.1-1,5sec(50ma)operatuonal method:hadle control/remote control