Note: 1. It is a bluetooth transmitter, not a receiver, and cannot be paired with a phone or computer_x000D_2. Please allow some error in manual measurement. Specification: Item Type: MP3 Player_x000D_Material: Plastic_x000D_Size: Approx. 52.5x40.5x11.5mm / 2.07x1.59x0.45in_x000D_Screen Size: 1.77 inch TFT Color Screen_x000D_Resolution: 128x160 Pixels_x000D_Bluetooth: 5.0_x000D_Supported Sound File Types: MP3, WMA, FLAC, WAV, APE_x000D_Support Video File Type: Support AMV, AVI (Requires Conversion Tool Support)_x000D_Supported Image File Types: JPEG, BMP, GIF_x000D_Supported E Book File Type: TXT_x000D_Radio: Yes_x000D_External Expansion Memory: Support Memory Card Expansion Card Up to 64GB (Not Included)_x000D_Battery: 250mAh Lithium Battery (Shipped with Battery) Features: 1Multifunction: MP3 player has built in music, ebook reader, picture viewer, video, recorder, wireless, alarm clock, card reader and other functions. 2Memory Card: MP3 player needs to insert the memory card (not included) into the Mp3 player and use it, support memory card expansion card up to 64GB (not included), enjoy the music you want. 3Bluetooth 5.0 technology: MP3 music player uses Bluetooth 5.0, which provides faster transmission speed, longer connection distance and stronger anti interference ability. 4HiFi Stereo Sound: Fidelity HD speakers, superior sound decoding chips, restore the most original sound, immerse yourself in your music world. 5Easy to Use: MP3 player adopts a 1.77 inch TFT color display, which is more convenient to use and read. Small and lightweight, it fits in your pocket and is easy to carry for running, gym, walking, traveling. PackageList: 1 xMP3Player 1 x Headphones 1 x Charging Cable