Aries Outlets 3.5x 420mm Working Distance Surgical Binocular Loupes Optical Glass with LED Head Light Lamp+Aluminum Box Black

Amazon.com Price: $48.90 (as of 05/01/2018 14:41 PST- Details)

Magnification: 3.5X,Working distance: 420mm
The power of the LED bulb:1 W
The lifetime of the bulb:10000 hour