Ring with blue silicone protrusions and stimulating basis for the microcapsule vibratory multe velocity to further enhance the pleasure. The waterproof. Uses three batteries. Measures overall Product - 7cm x 6cm Measures Ring Diameter - 3cm Measures Packaging - 9.5 cm x 8.5 cm x 6cm Approximate Weight - 94g Batteries now included Hygiene - Before and after use and wash with water liquid antibacterial soap, apply a portion of talc to keep your accessory. Avoid water contact in the battery compartment.