Features: 1) Compliant with bluetooth spec. V1.1 2) Compliant with USB spec. 1.1 3) 0dBm class 2 output power 4) Sensitivity: better than 80dBm 5) 10m (33\'\') working distances 6) Supports 79 channels 7) Transmission rate: 723Kbps 8) OS supports windows 98SE / 2000 / ME / XP and later 9) Supports point-to-point (Piconet) and point-to-multipoint connections Specifications: 1) Bluetooth compliant: Bluetooth specification V1.1 2) USB Interface: USB 1.1V (Type A) 3) Operating range: up to 10m (open space) 4) Radio frequency range: 2.4 - 2.48GHz unlicensed ISM band 5) Modulation: GFSK (Gaussian Frequency Shift Keying) 6) Device power class: class 2 7) Spectrum: FHSS (frequency hopping spread spectrum) 8) Data rate: 1Mbps 9) Build-in-security: encryption and user authentication 10) Compatible OS: Windows 98 / 98SE Windows Me, Windows 2000 and Windows XP 11) Operating power: powered by USB port directly 12) LED indicator: power 13) Bluetooth profiles supports: a) Human interface device b) File transfer c) Dial-up networking d) Bluetooth serial port e) LAN access f) Synchronization g) Fax h) Network access i) Printer 14) Dimensions: 55 x 18 x 10mm Outer packing: 20pcs/ctn Carton dimensions: 46 x 45 x 24cm N.W.: 2.5kg G.W.: 3.2kg