You'll see all sorts of knock-offs, but nothing is a durable as the Water Dancer. Waterproof, portable, small but mighty, the Water Dancer is the original, and backed up by a 1 yr manufacturer warranty. Mid-buzz and not quite throbby, use with the plastic top on, or take the top off for more variation in surface. Great travel companion. Medium loudness, so sing loudly in the shower.
Size: 0.88"at widest point; total length is 4.5". Color: White Batteries: 1 AA, included Material: Plastic. Care & Cleaning: Soap and water wash. Make sure you don't pry off the internal metal tab as it won't work without it.