Specification
Lithium bettery ensure the long time operation and best perfornamce
Halogen light for true tissue color and consistent, long-lasting illumination
Apertures include large and small spot,center-net,and red-free filter
Dust protection for maintenance free life
Rubber brow rest prevents scratching of eyeglasses

Technical data
The following correcting lenses range:
+in 1D steps |1-6 |8 |10 |12 |16 |20
- in 1D steps |1-6 |8 |10 |12 |16 |20|25
Large and small spot,center-net,and red-free filter
Bulb : 3.6V2.6W halogen bulb
Batteries : long life rechargeable lithium battery