1、One key recording/saving, noise reduction and low power auto save recording. 2、Timing shutdown supports time sync. Recording format: MP3, WAV and all lossless music formats. 3、High sensitivity stereo dual MIC, stereo record/output. 4、Variable speed playback with constant tone. Support restore factory defaults. 5、Built-in loudspeaker and support 28 languages for optional. Features: One key recording/saving, noise reduction and low power auto save recording. Timing shutdown supports time sync. Recording format: MP3, WAV and all lossless music formats. High sensitivity stereo dual MIC, stereo record/output. Variable speed playback with constant tone. Support restore factory defaults. Built-in loudspeaker and support 28 languages for optional. Specification: Screen: OLED screen Case: zinc alloy Recording time: about 20 hours Playing time: 8hrs by earphone, 4hrs by speaker Charging time: 2hrs Battery capacity: 3.7V/260mAh Standby time: 520 days 10-15 meters distance recording Colour: Silver, black, gold(optional) Size: 93*31*10 mm Product weight: 136g Package List: 1 * Audio Recorder 1 * USB Cable 1 * User Manual 1 * Audio Recorder 1 * USB Cable 1 * User Manual