Rechargeable vibrating duo balls. Ergonomically designed for the natural contours of a woman. Hi-tech "squeeze me" technology for intense vibrations on command, or manually as desired. Powerful independent dual motors with incremental speed controls. Instant on/off function. Easy to follow instructions included. Waterproof. Whisper quiet. Premium Silicone maintains and retains body heat. Unscented, non-porous, and hypoallergenic. Satin finish and virtually seamless. Sturdy retrieval cord. Rechargeable with premium Lithium Ion battery. Security travel lock. 110/240 Volt power adapter. LED charge indicator. Powered by Power Bullet. 3.5"x 1.25"/ 9 cm x 3 cm.