Color: Black + Red;
Fixed lens magnifier: 4X-89 x 29 mm (L x W);
Flip lens magnifier: 4X-89 x 29 mm (L x W);
Round Single-eye magnifier: 5X -29 mm (dia);
Power by: 2 x AAA batteries (Not included);
Adjustable perimeter of headband: 21.26-27.17inch / 54-69cm;
With detachable light source box, which is easy to take out;
You can also use this product even if you wear glasses;
Dial adjustment headband conforms to comfortably fits most head sizes;
here are two parallel lens assembly parts, and you can also overlap two lenses for getting a higher magnifying multiple;
2 Bright LED Bulb to illuminate Viewing Field.
Used under the following conditions:
Operate or read at a dim or dark place;
Interesting work such as carving, handcraft and sewing;
Assemble or repair small fitting;
Check the finished product.