• Hands-free Bluetooth headset: Incoming call announcement and voice-activated answer! These headphones will free up your hands, allowing you to drive with confidence. Powerful audio quality and noise cancellation: 16bit/24bit audio support with APT-X high-fidelity audio technology, Subb and ADPCM (SB-ADPCM) digital audio compression methods and intelligent noise suppression capabilities. Ergonomic Headphone Design: Ergonomic ear-hook form, light and skin-friendly material and soft rubber ear cap. It has a 180° swivel earpiece that can be changed between left and right ear and the angle can be adjusted. Compatibility and applicability are extensive. Supports all Bluetooth devices and mobile phones with the ability to connect two devices simultaneously. How to use Adjust the angle of the ear loop in the front and the ear in the back. Put the headset on, with the headset facing the corner of the mouth. Adjust the comfortable angle and wear it. Product Details Color: Black Bluetooth Version: CSR8615 Ver. 5.0 Transmission Frequency: 2.4GHz Transmission Distance: 10m Talk Time: 6~8 Hours Standby Time: 120 Hours Support File Format: A2DP Music Player, Earphone and Hands-Free Mode Package Contents: 1 x Stereo Wireless Business Bluetooth Headphone