1.25/3.25 cm (ring). 2.5 x 2/6.25 cm x 5 cm (overall). Premium Silicone. Couples pleasure rings. Superior support for him with stimulation for a partner. Rechargeable. Complete charge in 3 hours. Premium rechargeable lithium ion battery. Unscented, non-porous, hypoallergenic. Satin finish and virtually seamless. Intense incremental speed control. Whisper quiet. Instant on/off button. Security travel lock. LED indicator light. 100% waterproof. 100% Silicone. Powered by PowerBullet. Universal USB cord included. One year warranty.