AYU finger vibes will electrify the senses and deliver toe-curling sensations. Perfectly designed to fit the tip of your finger, this solo or couple's pack allows you or your partner to let your fingers do the talking. Powerful motor with One button easy control. Extremely quiet. 2 pcs set. Waterproof. Submersible Material: Silicone Batteries: 2 button cell ( included) Running time – 40 minutes Product measurements: Length 4cm and inner diameter: 1.5 cm 1 year warranty.