Features: – Made to Fit: Bendable, Adjustable, Flexible – Quick Connect: Combination Charging & Data Transfer Cable – Easy ‘Drag & Drop’ Audio Music File Management – Submergible Waterproof Construction – 4 GB Integrated Flash Memory – Built-in Rechargeable Battery – Universal Size for All Head Shapes – Comfortable Non-Interfering Headphones – Flexible Wrap-Around Style Perfect for Sports – USB Port Connection – Simple Touch Button Controls – Includes Replacement Earbuds – Designed for Swimming, Running, Fitness, Exercise What’s in the Box: – MP3 Player Headphones – USB Charge / Data Transfer Clip Cable – (2) Pair Water-Blocking Earbuds (In-Water Use) – (3) Pair Active Sport Earbuds (On-Land Use) Technical Specs: – Marine Grade IPX8 Waterproof Rating – Digital Audio File Support: MP3, WMA – Battery Charge Time: 2 Hours – Battery Life: About 10 Hours – Lithium Battery: 200mAh – Speaker Type: NdFeB, 9mm – Speaker Rated Power: 5mW – USB 2.0 High-Speed Data Transfer – Frequency Response: 20Hz – 20kHz – Signal Distortion: 70dB – Weight: 25 g