... 1), 4 times anti-noise technology 2), two links 3), CSR bluecore 6 4), light weight Model Number: SK-BTK005Computer Bluetooth ... .Specification:Bluetooth version: Bluetooth V2.1, compatible with V2.0Chip: CSR Bluecore 6Transmission distance: 10m (class 2)Frequency: 2.4GHzWeight: 84gStandby ...