Item Type: MP3 PlayerMaterial: PlasticProduct Size: Approx. 90 x 40 x 8mm / 3.54 x 1.57 x 0.31inScreen Size: 1.8 Inch Color ScreenBT: 5.0Support Sound File Types: MP3, WMA, FLAC, WAV, APESupport Video File Type: Support AMV, AVI (Converted Video)Support Picture File Type: JPG, JPEG, BMPSupport Electronic Book File Type: TXTReceiving Sound: SupportExternal Expansion Memory: Support Memory Card Expansion Up to 64GB (Not Included)Battery: 250mAh Lithium Battery (Shipped with Battery)Package List1 x MP3 Player1 x Earphone1 x Charging Cable1 x Instruction Manual1. Manual measurement, please allow some errors.2. It is a BT transmitter, not a receiver, and cannot be paired with a phone or computer.1[Multi Function] MP3 player with built in music, electronic book reader, picture viewer, video, sound recorder, Bluetooth, alarm clock, card reader, etc. Memory Card (not included) needs to be inserted and used, supports up to 64GB expansion. 2[Bluetooth 5.0] MP3 music player with Bluetooth 5.0 version, faster transmission, longer connection distance and strong anti interference ability. You can connect Bluetooth headphones or speakers and enjoy playing music. 3[HD Speaker] Bluetooth MP3 player has built in HD speaker with premium sound decoding chip, you can better convert the source code to your original sound and enjoy the immersive HiFi sound, perfect for music lovers. 4[Electronic Book Reading] This music player has a 1.8 inch color display for easier use, providing you with a comfortable and smart electronic book reading experience. Support TXT file type, carry a huge amount of books with you. 5[Mini And Portable] Thanks to the small size and light weight of this MP3 player, it fits in your pocket and is easy to carry for running, gym, walking, traveling and enjoy music anytime and anywhere.