Item Type: Voice RecorderMaterial: Zinc AlloyRecording Format: WAV, MP3Music Format: MP3, WAV, AAC, etcBuilt in Polymer Lithium Battery: 200mAhPackage List1 x Voice Recorder1 x Charging Cable1 x Earphone1 x Instruction Manual1[One Key Recording] Recorder in the power on state, gently toggle the key up that is to enter the recording mode, simple operation, easy to use. 2[Voice Activated] Voice recorder supports sound control, intelligent detection of sound waves, recording when there is sound, no sound is stopped, saving memory. 3[Electronic Book Function] Sound recorder supports electronic book reading, you can also set up automatic page turning, add markers, another time you can continue to read directly down. 4[Noise Reduction] Built in noise reduction chip, significantly reduce the noise of different environments, so as to record high definition sound quality. 5[Timing Recording] Portable recording device supports timed recording, set the start time and end time, automatically open the recording in this time period.