Sleek and luxurious, these ergonomic in-ear headphones promise great sound, long-lasting wearing comfort and effective noise cancellation wherever you go. The batteries provide 5-6 hours of playback time, plus three charges from the case.Headphone style: The elegant and modern design features a well-balanced shape and ensures a comfortable fit for every ear. The lightweight material adds to the seamless listening experience.Speaker specs: Rich and authentic with high-resolution clarity, the Montblanc Sound Signature has been created by world-renowned audio engineer Axel Grell to provide impeccable sound quality no matter what you are listening to.Includes: Pocket-size charging case with in-ear headphones, USB-C charging cable, set of silicone ear tips (XS, S, M, L), safety manual and quick-start guideWireless connectivity: Multi-point Bluetooth® 5.2 with 10-meter range. Connects to smartwatch.Additional features: Proximity sensor (the audio will automatically play/pause when you put in/take out the headphones). Touch control sensor on the emblem. Active noise cancellation (ANC): ANC off and live mode, adjustable using the Montblanc Sound app. 0.39" 85.45 g 20Hz ~ 20kHz frequency Water resistance: IPX4 Imported