Silicone Vibrating Balls With Remote Control 28 functions - 4 speeds with 7 vibration modes Add vibration to a dildo, vibrator or use as a c-ring Remote controlled Realistic features Made with Premium Silicone Waterproof Rating IPX5 Extreme Versatility Soft Silicone Material Hypoallergenic Non-Porous Product Details: Overall Length: 3.5in. Width: 2.2in. Depth: 1.7in. Inner Diameter: 1.38in. Weight: 2.3 oz. Material: Silicone Care Instructions: Clean with soap and warm water or toy cleaner. Use with any water-based lubricant.