SVS PB17-Ultra R Evolution Ported Cabinet Subwoofer Coffee Music playtime with ANC off:

Music playtime with ANC off: up to 8 hrs and Music playtime with ANC on: up to 7 hrs

You would be hard pressed to find all these features in one pack - Bluetooth

which also adjusts the mic's gain and loudness and quickly mutes you if a cough or sneeze creeps up on you

you effectively lose the use of the microSD card slot as a media playback option

SVS PB17-Ultra R Evolution Ported Cabinet Subwoofer Coffee Music playtime with ANC off:SVS PB17 Ultra R Evolution Ported Cabinet Subwoofer The next frontier in subwoofer design. All new 17 in high excursion driver with dual 8 invoice coil, trail blazing dual mono STA 2800 amplifier, and unprecedented 295MHz Analog Devices DSP unite in the most formidable and sophisticated ported cabinet subwoofer ever developed. Born from three decades of SVS design expertise, the pinnacle of subwoofer performance is here with the PB17 Ultra R