Features:

1. Magnification: 2.0X, 2.5X, 3.0X.

2. Focus distance adjustable, as convenient as wearing glasses.

3. Small range of visual field.

4. Applicable to those with arm tremor.

           Model               Visual Angle              Magnification

             ZS-2.0X                             12^。                                          2.0X

              ZS-2.5X                             11^。                                         2.5X

              ZS-3.0X                             10^。                                         3.0X

     ZS-2.0X-C (Clip-on)                  12^。                                         2.0X

     ZS-2.5X-C (Clip-on)                  11^。                                         2.5X

      ZS-3.0X-C (Clip-on)                  10^。                                         3.0X