Feature: 1. Open-ear design allows you to be aware of your surroundings for a safe and connected listening experience. 2. Open-ear design allows free airflow in and out of the ear cups, reducing the pressure applied to your ears by allowing sound waves to escape elsewhere. The open-ear nature, with nothing on or blocking your ear canal, is also better for hygiene. 3. Matte finish provides additional grip and reassurance that each earbud will stay in place no matter how much you move. OpenCirclet is resistant to twisting even under rugged conditions thanks to its silicone-coated memory wire. 4. Powered by 16mm large dynamic drivers and advanced air conduction, OpenCirclet delivers high-quality acoustic precision and amazing immersive stereo sound. The HavyBass algorithm tunes and boosts the bass, enabling the woofer to be heard clearly at different volumes. Specification: Features: Open-ear design allows you to be aware of your surroundings for a safe and connected listening experience. Open-ear design allows free airflow in and out of the ear cups, reducing the pressure applied to your ears by allowing sound waves to escape elsewhere. The open-ear nature, with nothing on or blocking your ear canal, is also better for hygiene. Matte finish provides additional grip and reassurance that each earbud will stay in place no matter how much you move. OpenCirclet is resistant to twisting even under rugged conditions thanks to its silicone-coated memory wire. Powered by 16mm large dynamic drivers and advanced air conduction, OpenCirclet delivers high-quality acoustic precision and amazing immersive stereo sound. The HavyBass algorithm tunes and boosts the bass, enabling the woofer to be heard clearly at different volumes. An IP55 rating makes it sweat and water resistant for worry free workouts in rugged conditions. No fear, no limits, no stopping. Beamforming array and AI Deep Neural Network algorithm reduce the disruptive noise around the caller. Optimized air duct suppresses wind noise during outdoor workouts. Therefore, the people you are calling can hear your voice more clearly. Specifications: BT Version: V5.0 Range: 10m Battery Playtime: Up to 13-hrs playtime Charge Input: Type-C *oraimo Lab test result. (Results are based on 70% volume. Battery life may vary depending on the volume, the playback source , the temperature, environmental interference, and the user's habits.) Package List: 1 * Headset Package List: 1 * Headset