Note: 1, the product itself is no memory, need to install the memory card, in the use of data cable to connect the computer can be. _x000D_2, the product's Bluetooth is single channel, can only output, can not input, can only connect Bluetooth speaker or Bluetooth headset. The others cannot be connected. _x000D_3, if you can not connect the Bluetooth, please pair several times to connect, and then click on the connection inside the pairing Settings. Specification: Item Type: MP3 Player_x000D_Material: Aluminum Alloy_x000D_Built in Battery: Lithium Battery 200mAh Features: 1Lossless Sound: This Bluetooth player features excellent sound quality and supports MP3, WMA, FLAC, APE, AAC, OGG and ACELP. 2Large Memory: LCD player supports up to 64G memory card (not included), it is recommended to use for MYMAHDI original memory card. 3Easy to Use: This Bluetooth player uses playlists to select your favorite songs, supports random play and play, supports sleep shutdown. 4Long Lasting Battery: The battery takes about 2 hours to fully charge, and can be used for up to 8 hours when fully charged, you can enjoy music for a long time. 5Aluminum Alloy: This 1.8 inch LCD MP3 player adopts aluminum alloy, ultra thin design, high strength, stable and durable. PackageList: 1 x MP3 Player1 x Charging Cable1 x Headphone