Discreet and personal Kegel exerciser with easy retrieval cord. Satin Finish and virtually seamless silicone, unscented, non-porous, hypoallergenic. Whisper quiet and waterproof. Rechargeable Lithium Ion battery runs for 1.5 hours on low speed, 25 minutes on high speed. Complete USB charge in 2.5 hours. Exerciser measures 3.75 in. by 1.25 in.