1.Bluetooth V2.0 and USB SPEC V2.0 compliant munication distance:20M 3.Output Class: Class 2 4.Frequency Range: 2.4GHz band(2400MHz-2483.5MHz) 5.Black, Yellow, Blue color available 6.With Individual Address Code in IVT Software 7.Support Windows Vista 8.ISSC Chipset Price: US$4.20/pc The price quoted on EXW Shenzhen. Packing: Bulk Pack Warranty: 1 year Lead Time: 7-10 days after confirm payment Payment: TT in Advanced