Specification: Material: Metal Recording format: MP3 format Recording power: 15mA-25mA Recording sample rate: 32KHz Recording bit rate: MP3 (128Kbps) Playback format: MP3, WAV, WMA and other formats Headphone jack: 3.5pie stereo jack USB interface: MICRO-Mike 5P/DC5V-1A Storage: 4GB-128GB (optional) Display: 1.3-inch broken code screen Speaker: 2415 speakers Built-in MIC Omni-directional capacitor MIC Net weight: about 58g Size: about 95.20mm*25.20mm*12mm Battery capacity: 220mAh Battery working time: about 8 hours for recording, about 10 hours for headphone playback Audio playback time: about 6 hours of continuous playback (depending on the volume) About This Item 【Professional Recording Equipment】: Upgrade the digital recorder to easily record your meetings, interviews, appointments, speeches, lectures with dynamic noise-cancelling microphones. [Expanded Memory Recorder]: This mini-recording device supports 128GBTF card memory expansion (not included), which can save more recording information. 【Compatibility】Compatible with MP3, WAV, WMA and other formats, easily transfer files to computer via the included USB cable (MAC users need to download VCL audio player to play the recorded files) [Easy to use]: Simple operation, one-click record and save, make sure you don't miss any important information. The clip is designed so that you can wear it on a coat or book. [Multi-function]: Not only a small voice recorder, it also supports writing and use as a U disk. This is the perfect gift for students, professors, teachers, businessmen, writers and bloggers, anyone who loves recording. Package Contents: 1* Voice recorder 1* Instruction 1* Headphone cable 1* Data cable Compact Recorder Mp3 Recorder with 18 hours long battery life Superior Recording Quality Voice-activated recording and long-distance recording