Starsource 20X Watch Clock Repair Magnifier Glass With 2 LED Lamps Adjustable Eyeflap Loupe Multiple: 20X LED Batteries: 4xbutton batteries (included) Eyeflap can be overturn freely; Turn on the light source if insufficient light LED lamp has enough brightness and can ensure better magnifying effect. Industrial Purpose:Circuit board and printing industry;Medical science;Gardening;Coin and Stamp;Education;Geography;Home and Office