I've used this for years, it works great:
[link|https://www.lazada.com.my/products/ready-stockreading-aid-headband-magnifier-led-light-head-lamp-15x-3x-85x-10x-magnifying-glass-tool-jeweler-loupe-with-led-lights-for-watch-repair-arts-crafts-i3787592555.html|https://www.lazada.com.my/products/ready...|new_window=true]
It has adjustable magnification of around 2 to 20 times and an adjustable LED light. You can probably find it on other sites too, such as aliexpress.com