About this item Excellent Bass Capabilities - OpenRock S open-ear headphones adopt a new generation of TubeBass bass enhancement technology that concentrates and transmits the energy emitted by the speaker to the ear canal, achieving far-field silencing, reducing sound spillage, and allowing music to surround only the user's ear canal. Paired with a 16.2mm dynamic driver, it provides unprecedented bass capabilities in open-ear headphones. 60 Hours of Playtime - The earphone’s powerful battery can provide up to 19 hours of listening and talk time at 70% volume on a single charge, plus a 750mAh charging box that can last for 41 hours, and the OpenRock S can provide 60 hours of playback time on a single charge. Bluetooth 5.3 plus IPX5 Waterproof - OpenRock S wireless earbud's latest Bluetooth 5.3 further achieves low energy consumption and high transmission rate on the basis of Bluetooth 5.2, shortening the delay time and making the headset connection smoother. It is also IPX5 sweat-proof and waterproof, allowing you to enjoy music worry-free while exercising. Open-Ear Design, Adjustable Earhook - OpenRock adopts the global exclusive titanium alloy ear hooks, the shape of the ear hook can be adjusted according to the size of each person's ear. Compared with in-ear earbuds, they fit the human ear better, disperse gravity, and are stable and comfortable to wear. AI 4-Mics Call Noise-Canceling - Four high-quality microphones use beam-forming technology to form an array to assist the AI call noise reduction algorithm, achieve four-mark AI call noise reduction, and eliminate environmental noise. Even if the wind is strong around you, the other party can still hear your voice clearly. Rock/Relax Dual Mode - The rock mode emphasizes low-frequency, rhythmic sports sound effects, aiming to reduce sports fatigue and activate your sports potential. The Relax mode emphasizes three-frequency natural and comfortable sound effects, aiming to help individuals relax their body and mind and reduce pressure.