The ergonomically designed AirCuff F306 are wireless earphones with IPX5 water resistance, ensuring peace of mind even during intense movements. - Model Name: AirCuff F306 - Design: Ergonomic design - Water Resistance: IPX5 - Battery Life: 12 hours (earphones only) - Battery Life with Charging Case: 36 hours (with charging case) - Size: 5.2cm x 5.7cm (charging case) - DSP Technology: Equipped with DSP7.0 - Fit: Zero wearing sensation - Movement: Doesn't fall out even during intense activity 【DSP Amplifier Function & AAC/SBC Codec Support】The DSP amplifier optimizes sound balance, improving the balance of low, mid, and high frequencies in the earphone output, and effectively identifies and removes noise within the earphones through digital signal processing. 【AI+ENC Noise Canceling & Prevents Sound Leakage】Equipped with the latest AI+ENC noise-canceling technology, you can enjoy clear sound quality in any environment. Even on a noisy train during your commute or amidst the bustling sounds of a cafe, the AI automatically detects surrounding noise and smartly cuts out unwanted sounds. 【Zero Wearing Sensation & Doesn't Fall Out During Intense Activity】The secret of the "AirCuff F306" lies in its bio-engineered ear cuff curve. ① "Floating structure" that doesn't touch the soft part of the earlobe ② Super-elastic arm made of shape-memory steel wire ③ Lightweight body of only 5.4g. 【IPX5 Waterproof Specification & Active in Sports Scenes】The "AirCuff F306" ear cuff earphones with IPX5 water resistance are resistant to everyday rain and sweat. They protect the internal circuits from water intrusion in any environment – intense sweat at the gym, running in the rain, or the sea breeze at the beach. Thank you for viewing.