Built-in USB-A and USB-C connectors Full backwards compatibility for any Poly QD headset Intelligent headset recognition SPECIFICATIONS AUDIO CHARACTERISTICS Bandwidth - 150Hz to 6800Hz Acoustic protection - Advanced acoustic limiting, including daily noise exposure, G616, and anti-startle functionality WEIGHTS AND DIMENSIONS Weight: 30g / .06lb Cable Length: 1300 mm/ 51.2 in Inline module: 75 mm x 25 mm x 10 mm /2.95 in x .98 in x .39 in CONTROLS Inline controls*: Call Control, Volume up, volume down, mute/hold Inline Indicators**: Red mute on, green/red/amber in call Inline tones***: With button presses *DA75 has no controls, DA85-M call control and Teams button are co-located **DA75 has no indicators, DA85-M indicator is red/blue/purple ***DA75 has no tones