•【IPX8 Waterproof】Professional IPX8 certification allows for use up to 2 meters underwater,perfect for swimming and water sports. •【32GB Built-in Storage】Enjoy music without a phone,storing thousands of songs for on-the-go listening. •【Open-Ear Bone Conduction】Comfortable and healthy alternative to traditional earphones,allowing awareness of ambient sounds. •【Secure Fit Design】Circular shock-absorbing wing ensures stability during intense activities like cycling and running,adapting to any head shape. •【Clear Call Quality】Built-in AI algorithm reduces wind and background noise for crystal-clear communications. •【Lightweight Comfort】Skin-friendly silicone material weighing only 34g for all-day comfort. Specifications: •Chip solution: AB8922B •Bluetooth-compatible protocol: HFP,HSP,AVRCP,A2DP •Bluetooth-compatible decoding format: SBC/AAC •Bluetooth-compatible version: Bluetooth-compatible V5.4 •Frequency: 2.402GHz-2.480GHz •Working distance: 10m •Pairing name: Langsdom AirSwim •Prompt tone: neutral prompt tone •Built-in TF card capacity: 32G •Bluetooth-compatible antenna mode: ceramic antenna •Number of channels: stereo •TF card memory expansion: 32G (pre-download 500 songs) •TF card compatible audio format: MP3-WMA-WAV-APE-FLAC •Speaker category: bone conduction speaker (with vibrator) •Speaker size: Ø14mm •Impedance: 8Ω±10% •Sensitivity: 82.5±3dB •Charging interface: magnetic charging •Battery type/capacity: polymer battery/150mAh •Play time: about 8 hours (75% volume) •Charging voltage: 5V •Charging time: about 2h •Standby time: 7 days •Nude weight: about 34g •Waterproof level: IPX8 Package included: •1 x Bone Conduction Headphones •1 x Magnetic Charging Cable •1 x Storage Bag •1 x Chinese and English Manual