Vibrator, roughly 3.9 inches and 1.6 ounces, with a soft, pliable silicone tip and adjustable power dial from faint hum to firmer. Waterproof to 20 inches, runs on one AAA alkaline battery (tester included) for up to five hours. Body-safe silicone with a polycarbonate core. A reliable, unelaborate return to yourself.