Bluetooth V4. 1 Specification, enhanced data Rata (EDR) compliant for both 2Mbps and 3Mbps supported
A2DP technology, Support 8K NBS (apply to SIP-T27G/T29G/T46G/T48G/T41S/T42S/T46S/T48S), Support 16K WBS (apply to SIP-T53)
Operating distance: 10 meters, answer incoming calls through Bluetooth headset
Terminate calls through Bluetooth headset, adjusts the volume of Bluetooth headset through Bluetooth headset or your phone, Bluetooth frequency range: 2. 402Ghz-2. 480GHz, built-in security, low power consumption