The Wand Essentials 7 Function Battery Powered Portable Massager Is Great For Releasing Tension And Deep Tissue Massage. Do Not Let Its Portable Size Fool You, This Massager Was Engineered With A Mighty Powerful Motor. With Seven Distinct Vibration Modes Ranging From A Steady Soft Flutter To A Crescendo Pattern. A Free Adapter Is Included That Makes This Wand Work With Most Larger Wand Attachments For Even More Pleasure Possibilities, And With No Cords To Get In The Way, You Can Enjoy Anywhere You Like! Measurements: Wand Is 7.88 Inches Long, Massage Head Is 1.39 Inches In Diameter, Large Attachment Adapter Is 2.31 Inches In Diameter. Note: Requires 4 Aa Batteries, Not Included.