ROCK O5 Head-mounted Bluetooth 5.3 Wireless Headphones Feature: 1. Soft and Comfortable Fit, Lightweight for On-the-Go: The flexible, ergonomic headband and soft, skin-friendly PU ear cups ensure a lightweight and comfortable fit. 2. Polished Metallic Finish, Beauty and Style in Design: The ear cups feature a UV metal coating, delivering a sleek metallic finish and refined texture. Whether you are working, relaxing, or on the go, these headphones offer a fashionable style. 3. Rhythmic & Dynamic Sound, Immersive Listening Experience: High-fidelity audio with 3D surround sound delivers an immersive experience that makes you feel like you are at a live performance. 4. 40mm High-Elastic Diaphragm, Enjoy Pure, Exquisite Sound: The headphones are equipped with a large-sized driver unit for high-definition sound reproduction, delivering rich details. 5. Clear HD Calls No Noise Interference: Equipped with echo cancellation technology, it ensures enhanced call quality with clear and sensitive voice reception. 6. 36H Ultra-Long Battery Life, Enjoy Music on One Charge: With outstanding battery performance, say goodbye to frequent recharging. A full charge lets you enjoy uninterrupted music all day long. 7. Bluetooth 5.3 Technology. Fast Pairing, Low Latency: Equipped with advanced Bluetooth 5.3 technology for faster speeds and lower power consumption. Experience seamless audio and video sync with low latency, and enjoy stable connections up to 10 meters away. 8. Effortless Operation, Easy to Handle: All kinds of operation commands are just a touch away. You can effortlessly adjust the music startstop and volume updown. Specifications: 1. Bluetooth pairing name: ROCK 05 2. Bluetooth version: 5.3 3. Barrier-free transmission distance: about 10 meters 4. Driver unit: 40mm 5. MIC directivity: omnidirectional 6. Input: 5V 200mA 7. Charging interface: Type-C 8. Music time: 70% volume can be used continuously for 36 hours 9. Charging time: about 2.5 hours 10. Standby time: ab