Thank you for viewing! ✨Brand new, unused, and free shipping✨ 【Product Specifications】 Communication method: Bluetooth 5.0 Profiles: A2DP, AVRCP, HFP Supported codecs: AAC / SBC Playback time: 4 hours (earphone only) / 16 hours (with charging case) Charging time: Approximately 40 minutes (earphones) / Approximately 1 hour (charging case) Case battery capacity: 300mAh Waterproof standard: IPX5 【CVC8.0 Call Noise Canceling】 The left and right earphones are equipped with true CVC8.0 call microphones, which intelligently identify environmental noise, reduce interference from external environmental noise, efficiently recognize human voices, and achieve high-resolution call effects. The 13mm composite diaphragm unit, customized to match the sound cavity structure of the earphones, has uniform and natural high, mid, and low frequencies, and the realistic and exquisite auditory experience perfectly works with the chip. 【New Bluetooth 5.0 Technology Chip】 It speeds up the connection speed, expands the coverage, and achieves excellent connection stability and high-speed audio transmission. The left and right earphones have independent chips and complete circuits, and can be used with either one ear or both ears. Both the left and right earphones are the main frames, and both ears can be independently connected to the smartphone at the same time, further increasing connection stability. With anti-interference, you can enjoy a smooth and complete wireless music experience. 【Lightweight and Compact】 The ergonomic design that fits the ear canal and the 45° angled ear entry angle, combined with numerous experiments by the team, are stable and secure, providing a comfortable fit. 【Easy and Convenient Operation】 After connecting to your smartphone for the first time, when using it again, simply take the earphones out of the charging case, and the earphones will automatically complete the quick connection with your smartphone. ※The instruction manual is in English. Please refer to the photos (4th photo) for how to use it. ☆Instant purchase welcome☆ Please check the profile before purchasing♪ #Hiyokotachi'sShop 1057/700.180 $$680