FULLY ELECTRO-HYDRAULIC CONTROLLED SYSTEM POSITION MEMORY BUTTON TO PRESET HEIGHT & BACKREST INCLINATION HEIGHT MEMORY BUTTON TO PRESET HEIGHT (H / M / L ) WITH STANDARD ACCESSORIES (REFER TO CATALOG) Detail Gynecological Examination Table & Obstetric Delivery Table Fully automatic electric hydraulic control system. The memory device is built-in the elevation function. It can elevate while the memory up/down point automatically. (SG-520 only) The memory device is built-in the elevation and back section function. It can be moved while the memories up/down point automatically. (SG-510 only) When the special position is needed, you can touch the foot control switch to adjust the back section up/down; table top up/down; and seat section up/down. (SG-510 & SG-520 & SG-530 only)