ROCK EB500 RAU07590 Bluetooth 5.4 Wireless EarCuffs Earphones Feature: 1. Open-Ear Design, Comfortable Fit, Fully open-ear clip design for perfect comfort and stability. 2. OWS Intelligent Bass Compensation, Equipped with intelligent bass enhancement technology to enrich the audio experience with deep, immersive bass. 3. IPX6 Waterproof, With an IPX6 waterproof rating, these earphones are perfect for use in rain, ensuring clear music and calls even in wet conditions. 4. 24H Ultra-Long Battery Life, Enjoy up to 4 hours of continuous playback or 3.5 hours of talk time, with up to 24 hours of total playtime using the charging case. 5. Instant Connection, Fast connection technology ensures instant and stable pairing with devices, eliminating the wait. 6. ENC Noise Cancellation, Equipped with ENC technology to effectively reduce background noise and enhance voice clarity for crystal-clear calls in noisy environments. 7. Sound Leakage Prevention Improved by 98%, Innovative sound leakage prevention technology reduces sound leakage by 98%, ensuring private calls and music enjoyment. Specifications: 1. Pairing name: ROCK EB500 2. Bluetooth version: V5.4 3. Bluetooth range: about 10m 4. Input: DC 5V 0.3A 5. Battery capacity: 40mAh(earbuds), 400mAh(charging case) 6. Playback time: 4h of music playback(at 80% volume), 3.5h of talking time(at 80% volume)