They have an ergonomic and IP68 waterproof design, designed for outdoor use. They have a long-lasting 500 mAh battery. Furthermore, their air conduction technology optimizes sound transmission, providing a listening experience without numbness. Features: Bluetooth 5.3 Connectivity: - The case features a transparent, lidless design similar to a space capsule, facilitating quick access to the headphones. Equipped with Bluetooth 5.3, they ensure an ideal connection, enhancing the user experience with air conduction technology that optimizes sound transmission. ENC Noise Reduction: - These headphones feature a 16.2mm dynamic unit that provides high-quality sound. ENC noise reduction minimizes external interference during calls, allowing for a clearer listening experience. In addition, SBC and AAC audio codecs guarantee excellent sound quality, with a frequency response range spanning from 20Hz to 20KHz, thus covering the entire audible spectrum. 21-Hour Battery Life with Fast Charging: - The equipped battery has a capacity of 500mAh, offering up to 21 hours of music playback at 50% volume. The headphones fully charge in 1.5 hours, while the charging case requires 2.5 hours for a full charge. They also have a fast charging function that provides 120 minutes of use with only 15 minutes of charging. IP68 Resistance: - They are highly water-resistant, making them ideal for sports activities and use in adverse conditions without worrying about moisture damage. Specifications: Performance: - Product type: Headphones - Wearing style: Open Ear - Recommended use: Calls/Music - Headset type: Binaural - Control type: Touch - Protection features: Sweat resistant, Water resistant - IP code (International Protection): IP68 Ports and Interfaces: - Connectivity: TWS - USB connector: USB Type C - Bluetooth version: 5.3 - Wireless range: 10 m Headphones: - Ear coupling: Intraaural - Headphone frequency: 20 - 20000 Hz - Dynamic Driver: 16.2 mm - Headphone type: Air conduction - Design: Ergonomic - Display: Yes. LED Battery: - Battery capacity: 500 mAh - Battery capacity (charging case): 500 mAh - Battery capacity (each earbud): 90 mAh - Continuous audio playback time (with charging case/ANC on): 21 h - Talk time (ANC on): 6 h - Charging time: 1.5h - Water resistance: IP68 Weight and dimensions: - Weight: 11.2 g - Charging case: 63 g