ÃÂ· Drum is strong , sturdy and durable with metal body and plastic brackets
ÃÂ· It is internally printed according to snellen chart
ÃÂ· Available in all Indian language for 3 meters with the following test: DUOCHROME TEST, FRIEND TEST, SPOT LIGHT, WORTHS FOUR DOTTS TEST
ÃÂ· REMOTE CONTROL
ÃÂ· Electrically operated from 6 meters distance with the automatic switch.