Features: 
Adjustable magnifier: rotate the dial to adjust the prescription and magnification according to your exact requirements. See clearly with convenient products.
Variable range: the diopter range of each lens is - 6.0 to + 3.0, which can well control the magnification. This way, you don't have to buy more than one prescription lens.
For each activity, please use these glasses in your daily work. Driving, reading, watching TV and using a computer - now you just need a pair of glasses to do everything.
High performance design: This product has a local edge design for men and women, which is very durable.

Explain:
It also uses impact resistant polycarbonate lenses. It's worth it!
With the help of a sphere that can precisely adjust the prescription and magnification of each lens, these focusing glasses can meet the needs of most users.

Specifications:
Adjustable focal length: - 6.00 to + 3.00
Frame color: Black
Size: 100mm x 200mm x 70mm/3.94 x 7.87 x 2.76"
Material: AP + PC

Notes:
1. Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you!
2. Please allow 1-3cm measuring deviation due to manual measurement.