Hj638b huaihuang top-mounted computer controlled integral dental unit Standard Configurations: 1, Automatic thermostatic water supply system:1set 2, Built-in handpiece water purification system:1set 3, Deluxe rotary cuspidor:1set 4, Strong/weak saliva ejector:1pc each 5, Deluxe motor chair (self adjusting):1set 6, Electrical dental chair control system(three memory):1set 7, Dental operation light:1set 8, Three-way syringe(cold or hot water):1pc each 9, Film viewer:1set 10 ,Multifunctional 4-hole pedal switch control:1set 11, Dentist stool:1set Technical Specifications: Power voltage:AC220V 50Hz/60Hz Motor voltage:DC24V Air pressure:0.5MPa - 0.8MPa Water pressure:0.2MPa - 0.4MPa Optional Accessories: One set per one wooden case Wooden case size 151, 127, 105CM G.W.:280KG