I have 2 of the bendable LED lights. The one I use is plug-in electric and magnetic. I stick it on whatever vintage metal machine I'm using - Featherweight, Viking, ect. It has 10 LEDs and is a great help with the older dim-single-bulb machines. My Mom recently gave me one that is stick on, it is an inexpensive 3 LED "Dritz" brand that she got from Joann with a coupon. it is battery operated and I'm not sure if I will use it or exchange it. My Bernina has a u-shaped florescent light and I have an Ott-light next to the cabinet it's in. It might be helpful on my serger, which has no light.