1、With a display screen design, time and recording time can be displayed. The mini keychain shape is easy to carry and use. 2、Intelligent voice control, record when there is sound, stop when there is no sound, save storage space and improve efficiency. 3、With its own delete function, unnecessary files can be deleted directly without a computer. So it is very useful for people to use. 4、Mini key ring shape, easy to carry. It supports playback of audio files such as MP3/WMA/WAV, and you can enjoy high‑definition voice after plugging in the earphones. 5、Digital noise reduction technology effectively restores the clarity of the original sound and greatly reduces environmental noise. One‑button recording, recording when power on, and saving when power off, saving power and easy operation. Item Type: USB Flash Disk Material: Zinc Alloy Colour: Black Recording Format: WAV Music Format: MP3 / WMA / WAV Sampling Rate: 48KHZ Recording Bit Rate: 192 Kbps Recording Method: Start Recording/Shutdown Save Battery Type: Built-In 200mAh Lithium Battery How to Use: 1. Recording: Without plug in headphones, push the switch to the ON position to enter the recording state. 2. Pause: Long press the "+" key or "-" key to pause, short press the "+" key to continue recording. 3. Save: Push the power button to the OFF position to save the recording file and shut down. 4. Music playback: plug in the earphones, push the switch key to the ON position, enter the music playback state, short press the "-" key to switch between music playback and recording playback, short press the "+" key to play the another  song. 5. Volume adjustment: In the playing state, long press the "+" key to enter the volume adjustment interface. In the volume adjustment interface, short press the "+" button to increase the volume, and long press the "+" button to decrease the volume. Short press the "-" key to exit the volume adjustment interface. 6. Delete files: In the playback state, press the "+" and "-" keys at the same time to enter the pause state, long press the "-" key to delete the currently playing file, and press the "+" and "-" keys to delete at the same time all files. 1 x USB Flash Disk 1 x Data Cable 1 x Earphones