Check the listing for details. Replacement USB Wireless Dongle for Fitbit Flex/Force/One/Charge. Color: Black, Condition: New. Listed at 2.99 USD. Product Description: 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. Specifications: Bluetooth V2.0 + EDR A2DP Compatible Backwards compatible with Bluetooth V1.1 & V1.2 Data Transfer Rate: 3 Mbps Range: Up to 20M Supports all operating systemsDriverless operation on Windows XP, Windows Vista, Windows 7, and Ubuntu Works with both 32-bit and 64-bit versions of Windows and Linux Low-profile design is perfect for both laptop and desktop computers