Bluetooth Version: v2.0 + EDR Working distance: 100 meters. Frequency Range: 2.402hz-2.483GHz. Data rate: up to 3Mbps Spread spectrum: FHSS (Frequency Hopping Spread Spectrum) Modulation method: GFSK (Gaussian Frequency Shift Keying) I/O interface: USB v1.1 System support: Windows XP/2000/ME/98SE Dimensions: 55.0 x 18.0 x 10.0mm LED indicator: single LED Support file transmission, dial-up, internet access, fax and sound transmission Bounded Bluetooth software: IVT BlueSoleil