... , 20pcs/ctn, 17.5/16kgs Purpose: ENT diagnostic set is designed for doctor's medical check eyes,ears,nose,mouth and throat.FEATURES ... ,no cornea reflecting light and even lighting,which highly improves diagnostic function.Aesthetic and endurable battery handle is equipped also.WG ... .3A) Power Supply:1.5V x 2 "C"Type ENT Diagnostic Set WG-I