Magnifying power: 5X Light source: 1 x LED lamp For seniors or people can read the book, the newspaper and the magazine with weak eyesight. With rotary knob switch in a simple and fashionable design Product Name: portable magnifier magnifying power: 5X Material: ABS Color: Black + White Dimensions: - diameter of the lens: 45 mm - Total length: . 8 cm - Width: . 5 cm Power: 2 x CR1620 button cell batteries Main functions: - Even for fieldwork, office, printing, manufacturing industry, home. Usage: Drag the magnifier to the position less than 150° angle in this case, the light source not turn. The LED bulb works only in the dark during extension of the magnifier to the position more than 150° - 180° angle. delivery: 1 x magnifier 2 x button cell battery 1 x English user manual Note:Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3 cm.