Bose Earphones Open-type casual/sports, products from Japan

True wireless sports headphones for complete freedom of movement. Makes the sound of music clear and powerful. Charging time: 2 hours.;The earphones come with sweat and weather resistance (IPX4 standard), 3 types of StayHear and sports chips (S / M / L size) to provide a comfortable and secure fit.;Up to 5 hours of playback time per charge, and an additional 10 hours with the included charging case.;Track your lost earphones with the Find My Buds feature of the Connect app.;Firmware updates improve audio-video sync for customers using iPhones, iPads, and other Bluetooth devices that support AVDTP version 1.3 or later. Available via the Connect app or btu..com.;SoundSport Free headphones have a dual microphone array integrated into the right earphone and can be used during a call when connected to a Bluetooth-enabled smartphone. Call voice can be heard only with the right earphone.;Package Contents: SoundSport Free Wireless Headphones, Portable Charging Case, 3 Size StayHear + Sports Chips, USB Cable.