The Lovers Power Bullet is a very popular product.  It's small, discreet and powerful! Use it to massage your sore body parts or use it as a clitoral massager during intercourse or masterbation.  You can take it anywhere with you.  It is only 2" long.  It has multi speed vibrations and is powered by G 13-A batteries which are included when you purchase it. 

They come in assorted colors: Pink, Purple, Black or Blue.