Asahi Denki Kasei LED Fingertip Magnifier, White, AYL-02WH

It is attached to your fingers so you can use both hands freely. It also brightly illuminates the needle, making it convenient for threading. Wearing it on your finger makes it easier to see the text on a smartphone screen when it's small. Because it provides bright light, it is also useful for delicate work such as pricking out objects with tweezers.