Specifications: Origin: Mainland China Certification: None Audio Format Support: WAV,MP3, WAV External memory: Yes Balanced Out: Yes Screen: Yes Battery Life: 10 hours Style: MP3 Model number: MP3 Player Function: Bluetooth-Compatible , E-Book Reading,FM Radio,Voice Recorder,Build in Speaker,World Clock Package: Yes Display Size: 1.7 inches Supports Recording Function: Yes Supports FM: Yes Operation Mode: Touch Screen + Touch Tone Supports EBook reading: Yes Bluetooth-Compatible : Yes Display: 1.77 inches 128*160 Screen: High-sensitivity full-screen touch screen Bluetooth-Compatible version: 5.0 Video format: AVI 128*160 (converted by conversion tool) Picture: Support JPG/JPEG/BMP Record format: WAV E-book: Support TXT file Speaker: 1W*8 ohm Software language: Simplified Chinese, English and other six languages Battery type: Lithium battery Charging specification: 5V/1A input Charging time: approximately 2 hours Interface: TYPE-C USB, charging Analog output: 3.5m analog output TF card expansion:≤128GB System Configuration: Operating System Windows XP/Mac OS 10 and above Working temperature: -5& 8451;-40& 8451; Product size: 57.00x43.00x13.00mm/2.24x1.69x0.51inch Product weight: about 32g * Audio metrics shown are for reference only. Due to the small difference in the electronic components of the product, the audio parameters will deviate slightly. Please refer to the material machine.