... ,high quality 3.favorable price, fast delivery lcd chart projector #ACP100, auto chart projector the machine is for checking ophthalmic eyesight ... . Technical Parameters:Chart 31 visual chartworking distance 1.1mChart Baffle Single, ... 35w Halogen lampPower 220v/110v, RemoteBattery 3.7vStandard Time Chart 3~10 Min, Remote SwitchSize Host 40cm*28cm*56cm, ...