Quantum vibe black vibe therapy has created this new generation of vibrators with the modern woman in mind taking design and quality into account to provide a complete and very pleasant experience. experience the difference with this fantastic product the quantum is designed to increase its intensity by adapting to your moods made of 100% medical silicone and ergonomically designed to perfectly adapt to your body and your hand this stimulator will provide you with a unique experience .- fully waterproof.- powerful silent vibration.- 7 programs that control the intensity of the vibration.- very imaginative and ergonomic design.- hygienically superior medical silicone.- tactile buttons for easy use.measures: 8.5 cm x 2 cm. works with 1 battery n1 that is included.