Enhance Erections & Increase Sexual Pleasure at the Same Time! The Vibrating E Ring is a thicker ring for a firmer hold to encourage a longer-lasting erection. With two unique designs and 6 fun styles to choose from, one is right for you. Can be worn with/without a condom, are water resistant and when the vibrations run low. Specs: Length: 5 cm Width: 3 cm Depth: 1 cm Ring: 1 cm Thick Ring Hole: 2 cm x 2 cm (before stretching) Material: Silicone Functions: 1 speed Powered by: AG3 battery Motor (included) Motor can be purchased separately Special Features: Waterproof Package Dimensions: 11 cm l x 8.5 cm w x 1 cm d Package Weight: 11 g