The magnifying glass with light has a button.You can set the light mode and then turn it on/off with the button.When you use the magnifying glass, you only need to insert 3 AA batteries (not included), which is convenient and quick.Note: Please insert the battery with correct polarity.If it still cannot be used after inserting it, reinsert the battery properly. This magnifying glass with light has an ergonomic design, comfortable feel and lighting equipment, suitable for the elderly and children.The black and white appearance of the magnifying glass says goodbye to the limitations of the same color and is more beautiful.The hand-held magnifying glass with reading magnifier has a diameter of 10 cm and offers a wide field of vision.At the same time, the magnifying glass with light is made of ABS and elastic material, which is more durable. The magnifying glass with light is suitable for elderly people to read.Older people use it to read newspapers, read various manuals, etc. If you don't have reading glasses, you can use a reading magnifier to view small images and texts.At the same time, the magnifying glass with light is suitable for children and professionals.It can be used to observe small animals, identify jewelry and inspect handicrafts.