Simple and to the point. Smoothie Vibrators (or simply "Smoothies") first appeared on the market as far back as the 1940's, when they were among the first battery-powered vibrators available. Originally offered under the guise of 'personal massagers', these basic, but highly functional designs ushered in the era of cordless pleasure.
Today, the Smoothie Vibrator is perhaps the single most recognizable of The Usual Suspects, and for many is the design that springs to mind when a vibrator is mentioned. With their elongated shape, Smoothies can be used for internal or external stimulation, and offer an inexpensive and unintimidating starting point for those new to sex accessories.
Simple design - a fun and easy introduction to vibrators
Dynamic intensity - vibration level increases as you twist the cap