I sent Jason Klass from Gear Talk a box crammed full of stuff from my store, and the first thing he dug out was a Cord Lock Light from Black Crater Gear. Jason has a ton of great reviews and videos to his name, and he gives a in-depth review of the little LED light. He even spends some time in a closet with his camcorder with the night vision going full speed. Check it out and then peruse his many other videos if you like learning about gear.