IPX8 Waterproof: This MP3 player features IPX8 waterproofing, allowing the main unit to be submerged in water without damage. Long Battery Life: Built-in 110 mAh polymer lithium battery provides up to 5 hours of playback on a 2-hour charge. Wide Range of Scenarios: Suitable for swimming pools, beaches, hot springs, baths, spas, 3-5 meter diving, outdoor sports, and any environment involving water. Easy to Clean: Effectively prevents rain and sweat from penetrating. Simply wipe it clean to keep it looking like new. USB Transfer: Standard USB port for downloading songs from your computer. Compatible with MP3, WMA, and WAV music formats. Item Type: Waterproof MP3 Player Material: Silicone Bluetooth: 5.0 Music Format: MP3 WMA WAV System Support: Windows 98 and later Headphone Jack: 3.5mm Waterproof Rating: IPX8 Built-in Battery: 110 mAh polymer lithium Package Includes: 1 x Waterproof MP3 Player, 1 x Headphones, 1 x Charging Cable, 1 x Audio Conversion Cable, 1 x Manual, 4 x Earmuffs. Customer Satisfaction: If you encounter any product issues after receiving the goods, such as damage or incorrect quantity, please contact the seller immediately for satisfactory customer service.