At 1.9cm this is arguably the smallest Bluetooth dongle in the world today. Despite its diminutive size Bluemicro PRO offers the same super-fast transfer speeds and enhanced connectively as other standard-sized V2.0 Bluetooth adaptors without the disadvantage of bulky adaptors which often get left at home! Bluemicro PROs ultra low-profile (only protrudes by 7mm) means that once its plugged in it can be left in making it the ideal solution for those who need Bluetooth connectivity on the move.