銆怚PX8 Waterproof銆慞rofessional IPX8 certification allows for use up to 2 meters underwater, perfect for swimming and water sports. 銆?2GB Built-in Storage銆慐njoy music without a phone, storing thousands of songs for on-the-go listening. 銆怬pen-Ear Bone Conduction銆慍omfortable and healthy alternative to traditional earphones, allowing awareness of ambient sounds. 銆怱ecure Fit Design銆慍ircular shock-absorbing wing ensures stability during intense activities like cycling and running, adapting to any head shape. 銆怌lear Call Quality銆態uilt-in AI algorithm reduces wind and background noise for crystal-clear communications. 銆怢ightweight Comfort銆慡kin-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 Headphones1 x Magnetic Charging Cable1 x Storage Bag1 x Chinese and English Manual