Vinmall Hold Held Magnifying Glasses 30X with Light for Reading Magnifying Aids for Seniors 3.15 inch Magnifier Glass Black Sports & Outdoors and standby time is 1

and standby time is 1 month

You can place it vertically or lay down flat

it can be switched for the left/right ear by rotating the sound tube

Smart Cooling:

Vinmall Hold Held Magnifying Glasses 30X with Light for Reading Magnifying Aids for Seniors 3.15 inch Magnifier Glass Black Sports & Outdoors and standby time is 130X Hold Held Magnifying Glasses with Light for Reading Seniors & Kids 3. 15" Magnifier Glass Description: This magnifying glass provide 30X magnification, allowing users with low vision to read text, no matter the size for high power magnification. With 18 pcs high quality Adjustable LED lights, the magnifying glass system also provides 3 color lights to ensure an overall better reading experience. Comes completely assembled, just requires 3x AAA