The MP3 portable music player wights about 47g/1.7oz. It is light in weight, small in size, and easy to carry,it adopts a back clip design, you can fix it on your clothes or equipment,has a long battery life and can work for up to five hours,has a memory card slot, you can use the memory card to store more music,it supports a maximum expansion of 8GB, is made of high-quality aluminum alloy materials.

Feature:
EASY TO CARRY: The MP3 portable music player wights about 47g/1.7oz. It is light in weight, small in size, and easy to carry. You can wear it when you are out for activities. It will not take up much space.
BACK‑CLIP: The mini MP3 back‑clip player adopts a back clip design, you can fix it on your clothes or equipment, which is convenient for you to use when traveling, and you can also use it during exercise.
LONG BATTERY LIFE: The MP3 sports player has a long battery life and can work for up to five hours. You don’t have to worry about running out of power when you’re out, making it more convenient for you to use.
MEMORY CARD: The mini music player has a memory card slot, you can use the memory card to store more music, it supports a maximum expansion of 8GB, large storage space, you can use it with confidence.

Specification:
Item Type: MP3 Music Player Set
Material: Aluminum Alloy
Weight: Approx. 47g/ 1.7oz
Interface: 1x Mini USB, 1x 3.5mm/ 0.1in, 1x Memory Card Slot
Storage Type: Memory card (supports a maximum extension of 8GB(not included in the list)
Battery Type: Built-in 250mAh Lithium Battery
Working Hours: more than 5 hours

Package List:
1 x MP31 x Earphone
1 x USB Cable