FEATURES
1.Easy to replace the battery. Power off automatically by lying down after operation, while power on automatically when picking it up.
2.Power can be conserved and the lift time of the battery is 6 months and more.
SPECIFICATIONS:
1.Method of measurement: cornea reflaction light coincidence method.
2.Range of measurement: 45 to 82mm (both eyes), 22.5-41mm(each eye)
3.Graduation: 0.5mm
4.Range of focusing point : 30cm to infinity
5.Auto off time: 1 minute
6.Power source:DC 4.2V
7.Size:310*230*110mm
Weight: 0.8kg