MP3 Music Player Bluetooth 5.0 IPX8 Waterproof USB Charging Sports MP3 with Earphone for Swimming Bathing Note: After plugging in the computer,the red light will be on for a long time,long press the power button,the blue light will flash once,and then you can connect to the computer and charge it,and it also supports play while charging. Feature: 1. IPX8 Waterproof: MP3 music player, IPX8 is completely waterproof, with its own waterproof function, the host can be directly placed in the water. 2. Long Battery Life: MP3 player is lightweight and convenient, built in 110mAh battery, USB rechargeable, only 2 hours of charging can be used for 5 hours. 3. USB Transfer: MP3 player has a standard USB interface, you can download your favorite songs from computer, compatible with MP3, WMA, WAV music formats. 4. Application: Sports MP3 is suitable for swimming pools, bathing beaches, hot springs, 35 meters diving sports, outdoor sports and other wading environments or places. 5. Easy To Clean: Waterproof MP3 music player, effectively prevent rain, sweat from infiltrating, easy to clean, simple wipe can make MP3 look brand new. Specification: Item Type: MP3 Music Player Material: ABS BT: 5.0 Music Format: MP3, WMA, WAV Support System: for Windows98 and Above Headphone Jack: 3.5mm/0.1in Waterproof Grade: IPX8 Built in Polymer Lithium Battery: 110mAh Battery Life: 5 Hours Package List: 1 x MP3 1 x Earphone 1 x Charging Cable 1 x Sound Conversion Cable 1 x Manual 4 x Ear Cover How to use: USB transfer and charging: The red light is always on when charging, and the blue light is on when fully charged. The computer needs to be turned on for transmission (long press the power button for 3 seconds). Short press the power button to select the play mode: Sequence play (blue light flashing), random play (red light flashing), single loop (red and blue light flashing) long press for 3 seconds to power on. Pause play button: Long press to turn on BT to transmit "red and blue lights flashing quickly" (automatic pairing). Left and right song selection keys: Single press to change songs, long press the original song to fast forward. Add or subtract volume: Short press for fine adjustment. Long press for fast adjustment.