Product material: ABS, acrylic lens Lighting source: 8 white LED lights Product power supply: USB socket / use 3 AAA batteries (the product does not contain batteries) Input voltage: 110-240 V Output voltage: 5 V Power: 0.4 W Power consumption: 0.6 W Product size: 190*90*26mm Pocket or Desktop Magnifier: This magnifying glass can be used in two ways. Simply stretch its stand and place it on the desk like a table magnifier. Close its stands to also serve as a pocket magnifier, which broadens the scope of application. High Lens Quality: The magnifying glass lens is reinforced and has a hardness of up to 5 hours, which is more wear-resistant. Provides clearer imaging magnification. 8 LED Bright Light: This magnifying glass features 8 powerful, energy-efficient LED lamps that provide bright light and allow you to work in the dark. Make your working environment more comfortable, improve your efficiency, effectively protect your eyesight and avoid visual fatigue. Double Circuit Design - The magnifying glass can be powered by a USB cable (included) or by 3 batteries AAA (batteries are not included). You can choose one of them according to your needs to power the magnifying glass. (Suggest: use USB cable with desktop magnifier, use batteries with handheld magnifier) Delivery quantity: One piece