With Hydraulic or electrical chair, lower noise when up and down movement. Black, grey, blue color chair at buy''''s option. SPECIFICATIONS: Angle of rotation for swing arm: +/-30 able size(mm) : 84x40.5cm Angle of rotation for table: 90? Angle of rotation for chair: 60? Lifting height for chair: 500-700mm Loading for chair: 300Kg Lifting height for pillow: +150 mm Backrest obliquity: 60? Table and Case using complex material. Table & Outer Case Color: ivory or sapphire blue. Input Voltage: 110V/220V AC 50Hz~60Hz Engine power: 140W 220V AC Light Luminaire: 15W 110V/220V AV Fuse: 5A 250V AC Power without load: 1W Pressure Test: 2KV Working mode: S1 Main Wire: 10A 250V Working Temperature: -30?+50? Relative humidity: less than 90% Force of Pressing key: 1~5N Cooling mode: Nature cooling