Sennheiser’s new momentum true wireless 2 delivers exceptional sound quality with superior comfort and craftsmanship. Now you can enjoy sennheiser’s outstanding stereo sound anywhere and all day, thanks to active noise cancellation and an exceptional 7-hourbattery life, which can be extended to up to 28 hours via the charging case. Earbud features audio drivers: 7mm frequency response: 5 - 21 khz noise cancelling: yes bluetooth® version: 5. 1 microphone: yes on-ear controls: yes water-resistant: yes, ipx4 charging port: usb-c™ battery life: 7 hours of music time, 28 hours with case what’s in the box: sennheiser momentum true wireless 2 earbuds charging case usb-c™ charging cable silicone ear adapters (xs/s/m/l)