Ophthalmic Chair and Stand Specification Technical Parameter Table lifting range 200mm Table size 860mm×510mm Combination sets size 870mm×700mm×1850mm Voltage 220V±10% 50Hz Power 80W Weight 100kg Arm Manual Arm, beautiful compact Electric lift table A smooth quiet electric lift table. Projector Mounts Projector fixation can be adjusted up and down. Energy Saving Light Optometry Elegant, energy-saving.