After opening the box containing the Harmony (Yin), I questioned the pleasure I could get out of the 3" long massager. However, as soon as I turned it on after inserting the single AAA battery, I was blown away! This little bullet has 3 vibration speeds which only differ slightly, but it is very powerful to begin with, so it's not much of an issue. Unfortunately, you can *hear* its power, but it's nothing too loud that a closed door couldn't take care of.

The Harmony bullet is best used for clitoral stimulation. I placed it inside my vagina, which did feel nice, having it vibrate from within me, but I find myself gravitating back to my clitoris with it. It provides very nice orgasms within minutes!

The Harmony also comes with a nice carrying case. It is a small cylinder, just bigger than the bullet itself, with a molded inside so that the bullet does not rattle around inside at all. The case is a perfect fit for the product.

Unlike some vibrators, the Harmony does not have much of a smell. It is both phthalate-free and waterproof. It has a hard plastic feel to it. This makes it extremely easy to clean.

The design of this bullet is very nice. The bottom where the button is is thicker, somewhat bulb-like, then it thins in the middle before becoming slightly thicker again and making a rounded point at the top. This design makes the bullet very easy to hold and maneuver.

The vibrations in this bullet are consistent throughout the entire thing. There exists one button. One push turns on the lowest vibration, another increases it, another increases it yet again, then a fourth shuts the device off. I've only accidentally turned it off once while using it, but it is fairly easy to not hit that button during use.
The bullet is waterproof and does not seem to get too slippery in water despite its smooth texture.

Unfortunately it is a bit noisy. You may want to close your door and make sure no one else is around before using it. It is not something you would want to use in any sort of public setting.

The bullet's material makes it extremely easy to clean. Hot, soapy water can be used to clean it right up in seconds. Lubes could also be used with it without issue.