The vibrating pleasure stroker is completely self-contained with 30 functions of intense power stroking! The soft removable inner sleeve features pleasure nubs with deep thrusts and suction. Removable swiveling suction cup base means hands-free use in a variety of your desired positions. A memory chip lets you resume your last favorite function. Waterproof. TPR and ABS. Requires 4 AAA batteries (not included). 9.25" l x 3.5" w.