I just received my red light belt and used it for the first time. I love how it heats up! I don’t really see why it has vibration. It’s not very strong, so seems useless. I would also like to see this come with a battery pack with a shorter cable so it’s not so bulky. Luckily I have some battery packs so I will try those when they charge up. I can’t wait to see results with consistent use!