About this item Bluetooth 5.1 and Hi-Fi Stereo : The wireless headphones adopts advanced Bluetooth 5.1 chip and supports A2DP, HFP, AVRCP, HSP, A2DP and other Bluetooth communication protocols. You can listening for clear, true-to-life sound with a solid Bluetooth connection. Ф6mm dynamic speaker unit with composite diaphragm design, capable of clear highs(up to 20KHz), deep bass notes(20Hz minimum), and a surprisingly large soundstage for tiny ear bud. 35H Playtime and USB-C Fast Charging : The usb c headphones battery life is listed at 7 hours of listening time per charge, which is about enough for a full workday. The included charging case giving 35 hours of total playtime. The pocket-size storage case charges via USB-C, It only takes 1 hour to fully charge the charging case. Whether you’re sitting at your desk, commuting to work, or taking the dog for a walk, these noise cancelling headphones will be your best choice. Crystal-Clear Calls and LED Power Display : Earphones with mic are for people who want to listen wirelessly and who want to go toward convenience, sound, comfort, and call quality. The wireless ear bud's microphone is made from a single-crystalline silicon semiconductor, which helps reduce wind noise, enabling clear phone or video calls. Black wireless earbud Charging Case with LED Battery Display Shows Remaining Battery in Percentage, It is convenient to check the remaining power at any time. Ergonomic Design and IP7 Waterproof : Sports headphones combined with ergonomic design, their diminutive size makes them comfortable and discreet, the earpieces felt snug. Waterproof earbud with IP7 waterproof coating. Dust, and sweat damage means that taking a jog or getting caught in drizzle is no big deal. Running headphones are great for those person who loves to run, whether it’s inside on a treadmill or out on a trail, and relies on music or podcasts, for motivation or distraction. One Step Pairing and Smart Control : When you open the charging case, in ear headphones automatically turn on and connect with your phone. The true wireless earbud has a full control suite, including play/pause, volume control, track forward/reverse, call answer/end, and digital-assistant activation. Cordless headphones offer the convenience of being completely cable-free sound great and feel comfortable. The intuitive operation make this on ear headphones a pleasure to use every day.