Product Size(mm):172(L)x 82(W) Battery: 3X AAA 1.5V (not included) Weight(g):100/ 122 Magnification:3X Lens75mm Two LED, brightness is high. Causes the enlargement to be clearer. The handle spot uses conforms to the human body engineering design hand to grasp the modelling, has the circular eyelet platoon in the handle rear part to become the butterfly shape. Namely artistic had the friction action of force. Causes the magnifying glass to take in the hand is not easy to fall, feel is more comfortable. The unique triangle overlap battery warehouse design, does not occupy the space, small and exquisite, causes to replace the battery to be quicker, as soon as only need press the battery cover then to open the battery warehouse gently, after replacing the battery, as soon as presses the battery cover then. The switch push pedal, the ellipse belt arc scoop channel design, conforms to the finger shape, when use does not injury, the switch structure uses the shrapnel type design, causes and closes the feeling to be specially relaxed, and will not malfunction. Use scope: The work, the hospital, the school, appraise the instrument special-purpose, printing, the furniture, the machinery and so on.