It's a headband magnifier with detachable light source box.

Equipped with automatic pressurizing device, the voltage of two 7# batteries can be increased from 3.0V to 4.5V.

Detachable bulb devices; the angle of lamplight can also be adjusted.

The lens asssembly parts are added to two; you can also overlap two lenses. The magnifying multiple will improve at once when installing two lenses.

You can also use this product even if you wear glasses. the belt size can be adjusted freely according to the user's comfortable degree.

Features:

4 Lenses attahched
Double-lens:: 1.7x, 2x, 2.5x, 3x
Material of Lens:Acrylic resin(Processed by crack-proof rigid coating)
Size of lens: 100x50mm
Single-lens diamter:35mm
With detachable light source box and two "AAA" batteries.
Weight: 101g(when equipped with 2x lens)
Weight: 148g(2x lens, light source box and two "AAA" batteries)
Materials: ABS resin. PP resin
All the lenses of this glasses series are interchangeable

Package Includes:

One magnifier