The product has a beautiful appearance design, and the main control used is the Action Power main control, with advantages: stable performance, low power consumption, and excellent sound quality. The earphone is designed with a popular headphone interface, 3.5mm, and is matched. With ear-hook waterproof headphones, the body is directly waterproof, and there is no need to worry about forgetting to plug in the headphones and causing water to enter (you can watch the video effect) Note: The accessories currently do not include straps (because the straps are discontinued, you can also use swimming goggles to fix them when swimming or wrap them in a swimming cap). Supports MP3, WMA, WMA, OGG, APE, FLAC, WAV, AAC-LC, ACELP, AUDIBLE and other lossless formats, sound quality! FM radio 87MHz - 108MH. The 4PIN 3.5 headphone jack and USB interface are shared, and long the play button to turn on and off. Built-in 3.7V lithium battery, 130MA. Color: Black Material: ABS Package Contents: 1 * MP3 1 * Special ear-hook waterproof earphones 2 pairs * spare earmuffs 1 * Data cable 1 * English instruction manual Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.