The Autoblow 2+ XT is noticeably tighter than the Autoblow 2+ and strokes up to 6 inches (15cm) of your penis  Autoblow 2+ plugs into any electrical outlet. It never needs batteries.  You control the speed of the up and down stroking motion!  Interchangeable sleeves (sold separately) can be removed for easy cleaning  Autoblow 2+ XT uses an all-metal industrial strenght motor  Size B: Girth 4-5.5 in (10-14cm)