... .5x.For free: Trihedron lens ,Gonioscope,FunduscopeYZ5E is a basic type.YZ5Eis equipped with double-teaching tube. SpecificationsTypeConverging stereoscopeMagnificationsTwo-step magnificationsEyepiece10x ... , grey, redfree, cobalt blueIllumination Bulb12V/50W halogen bulbOptional AccessoriesApplanation Tonometer(T type)