福州市凯辉机械设备有限公司 
#HH-B12
Headband Magnifier
Description
(1.8X, 2.3X, 3.7X, 4.8X)
One-touch design. The magnifier is with time X1.8 and X2.3.
Just one touch, then you can change the magnifying time.
If glass accessory used, the more time you will get up to X3.7 and X4.8.