Seeedstudio Magnifying glass with LED

This magnifying glass with LED is a must have. It's designed with 2 pieces of qualified convex lens, which has improved magnifying power; and LEDs, which provides better view when the light is too dim to read. Hold it 2.5cm over the object horizontally, adjust a little bit to a perfect position to fit your eyes, there you go! It is useful to magnify tiny objects, such as machine parts, mini circuit, currency, and to read number and letters on micro-chip, no matter how small and dim it is. It's so small, you can easily add it to your key chain and use it on the go! A handy essential! Feature Convex lens. LED - White Light Keychain Specification Working voltage: 3V Battery: CR2016 Size: 70mm x 36mm x 21mm Weight: 29g Working temperature: 0°C ～80°C Store temperature: -25°C ～+80°C