1、Turn the power button on the upper left corner to turn on, adjust to the recording function and start recording. This recorder also supports U disk. 2、Our voice recorder is made of metal, the color is black, and it has a built in 260mAh lithium battery. 3、The recorder provides a playback recording mode, and the phone recording function allows you to record detailed calls. 4、The music formats supported by this recorder are MP3, WMA, FLAC, APE, and the frequency range is 20Hz to 20KHz. 5、Supported operating systems includes: for Windows 2000 and above, for Android 4.0 and above, for OS X 10.0 and above. Item Type: Digital Voice Recorder Model: N1 Material: Metal Colour: Black Function: Recording, Music Playback Screen: 80x160 Color Screen USB interface: Micro USB Music Format: MP3, WMA, FLAC, APE WAV Format Bit Rate: 512Kbps, 768Kbps, 1024Kbps, 1536Kbps MP3 Format Bit Rate: 32Kbps, 64Kbps, 128Kbps, 192Kbps Frequency Range: 20Hz to 20KHz Signal to Noise Ratio:> 80dB Distortion: 0.05% Battery Type: Built in 260mAh Lithium Battery Supported operating systems for Windows 2000 and above, for Android 4.0 and above, for OS X 10.0 and above 1 x Recording Pen 1 x Earphone 1 x Data Line 1 x Manual Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-Minnanxin