The Screaming O, The Fing O are vibrating stimulators that attach to your finger. Stretch it on any size finger and excite yourself during solo play or surprise your partner. Pick one of three different models for different sensations. Made from high grade silicone, The Fing Os are waterproof, easy to clean, and 100% hypoallergenic. Vibrations are provided from a Screaming O super-powered vibrating bullet which takes common cell watch batteries. The approximate battery life is 80 minutes, but simply replace the batteries to experience everlasting erotica.