Vesper is world's first USB rechargeable - multi=speed vibrator necklace. Vesper is a solid 316 stainless steel pendant with a nickel-free plated cap and matching 26" stainless steel chain. As a vibrator it has 4 speeds - low,medium, high, and pulsing. Its clean, sleek aesthetics make for both a subtle addition to your outfit and a standalone statement piece. USB cabled and storage pouch included. Splash-proof. Not for insertion. External use only.