This neck massager is really great. I finally bought it and tried it and it's surprisingly really comfortable. It gives a little tingling sensation and the vibration can be adjusted, just like how someone gives you a massage. In the beginning, it tickles a little bit, but you slowly get used to it it with time and experience.
I stay in front of my laptop for a very long time every day to study. I started getting pain in my neck and stiffened up pretty bad. I tried those large massagers before and they always end up in the closet because I’m too lazy to take it out, plug it in, and organize it after using. But this massager is super portable and light, so I just keep it on my desk and use it whenever I feel my neck tensing up. It's definitely a device worth getting!