Item Type: Desktop Magnifying Glass Material: ABS Power Supply: Plug in or Put Three AAA Batteries Matching Battery: 3 AAA Batteries (Delivered Without Battery) Product Use: Elderly Reading, Stamp Collecting, Embroidery, Antiques, Biological Observation, Accuracy Maintenance, Etc. Can Also Be Used Alone As a Desk Lamp Package List 1 x Magnifying Glass 1 x USB Power Cable 1 x User Manual 1 x Cleaning Cloth 1Adjustable: The bracket can be adjusted, and the angle and height of the bracket can be adjusted according to the size and shape of the observed object to realize multi angle observation. 25H Hardness: The lens has been appearance strengthened, the appearance hardness of the lens reaches 5H, and the wear resistance is better. The appearance of the lens will not be blurred due to fogging and deterioration after long term use. 321 LEDs: 21 LED lamp beads for lighting, simulating the effect of natural light, the lighting effect is soft and uniform, long term use can reduce eye fatigue, and the lighting can be switched between cold and warm light to protect eyesight. 4Handheld Mode: The main lens can be separated from the bracket and used alone as a handheld magnifying glass, which is not easy to be used for a long time. 5Dual Circuit Design: Dual circuit design, can use external power supply or battery power supply, with a scale ruler in centimeter and inch units on the base, which is used to measure the observation object.