The Bifocal Triple 4 Inch Round Magnifier is a bifocal magnifier and magnification lens with light, stand and neck strap designed for use by individuals with low vision. This hands-free magnifier has bright lighting and can be worn over the neck. It has a round lens with 1.5 times optical magnification that incorporates an insert with 3 times magnification at the bottom of the lens bifocal insert. It is designed for activities such as reading, knitting or other activities where both hands are needed for procedures. This magnifier comes with an adjustable neck cord and soft legs that allow the device to rest on the chest. POWER: Uses 2 AA batteries (not included). DIMENSIONS: The magnifying lens is 4 inches in diameter.