The Sex on the Go Mini Bullet by Cal Exotics has me extremely impressed. This bullet is wonderful. Powerful, not too loud, and versatile. The two waterproof protective seals (O-Ring and the button seal) are impressive as well because those are your most common places where water can get into your bullet. I love the size, and the smooth plastic makes it easy to slide into any toy. Perfect for use with cock rings, or just alone as a clit vibe.