Note: Please allow for errors due to manual measurement. Product Features: 1. Back Clip Design: This portable music player comes with a sports-style back clip, designed specifically for music and sports enthusiasts. You can clip the music player to your armband, pocket, collar, etc., and easily enjoy your favorite music while running, jogging, cycling, hiking, or other sports. 2. Bluetooth 5.2: This mini portable music player uses Bluetooth 5.2 technology, ensuring a more stable signal connection, stronger anti-interference ability, lower latency, and lower power consumption. The built-in speaker allows you to enjoy music without headphones, freeing your ears. 3. Noise Reduction Function: This portable music player uses a professional digital DAC audio decoding noise reduction chip to ensure higher sound quality resolution and reproduce the original sound with sweet highs, accurate mids, and deep bass. The MP3 player has 6 built-in equalizer modes: Pop, Rock, Jazz, Classical, Dance, and Country. 4. Supports Multiple Audio Formats: This MP4 player supports most audio formats, such as mp3, WMA, APE, FLAC, WAV, AAC, LC, and other music formats. (Note: Direct playback of audiobooks and iTunes is not supported.) Enjoy up to 10 hours of lossless music playback on a single charge; a full charge takes only 1-2 hours. 5. Multifunctional: This Clip MP3 player features a 1.77-inch screen and a quick-dial UI design for easy selection of desired functions, such as FM radio, recorder, video playback, alarm clock, e-book reader (txt format only), video file viewer, etc. It's an ideal gift for children, the elderly, and couples. 6. Independent Volume Control: This MP4 player features independent volume control for a more convenient user experience. It can also be used as a card reader or file storage device. A built-in high-speed USB-C 2.0 data cable allows for easy drag-and-drop of music files or browsing of folders after connecting to a computer. Specifications: MP3 player; Material: ABS; Color: Black; Product Dimensions: Approx. 66 x 41.5 x 18 mm / 2.6 x 1.6 x 0.7 inches; Battery: Built-in lithium polymer battery, capacity: 210 mAh; Screen: 1.77 inches; Bluetooth: V 5.2; Memory Card: Supports up to 128GB (not included); Interfaces: USB-C charging port, 3.5mm headphone jack; Functions: FM radio, editing function, video playback, recording function, e-book function, image browsing, alarm clock function, date and time function (including time setting and date setting);