EopZol trade; Replacement USB Wireless Dongle for Fitbit Flex/Force/One/Charge/Surge Type: Dongle This mini USB Bluetooth dongle adapter enables wireless data connectivity between computers and Bluetooth enabled devices. It enables a wide variety of devices- such as cell phones, PDAs, and peripherals- to connect wirelessly to your computer. Bluetooth is an open specification that operates on the globally available 2.4GHz radio frequency. Enhanced Data Rate (EDR) supports up to 3 Mbps transfer rate, which is three times faster than previous versions of Bluetooth.