The OVO W1 Bullet has a unique ergonomic shape. It is waterproof, phthalate-free, made of body-safe silicone. The motor is powerful but quiet and discreet. It has batteries included, and comes with a 15 year manufacturers warranty from Ovo. Designed in Germany, the W1 has won the Red Dot Design Award 2013 and the International Design Excellence Award 2013.