Item Type: Mini RecorderMaterial: ABSRecording Mode: Power On Recording, Power Off SavingRecording Format: WAVPlayback Format: MP3, WMA, WAVBuilt in Polymer Lithium Battery: 300mAhPackage List1 x Mini Recorder1 x Earphone1 x Instruction Manual1 x Charging Cable1VOICE ACTIVATED: Mini recorder starts recording when there is sound, stops recording when there is no sound, effectively saves internal space and power, restores clear original sound. 2OTG FUNCTION: This voice recorder can be directly connected to your phone via OTG adapter, not limited by your computer, you can organize important files directly on your phone. 3NOISE REDUCTION: Our voice recorder has a powerful DPS noise reduction chip, which can help you eliminate noise effectively and let you hear the most beautiful original sound. 4TIME NAMING: Mini MP3 recorder can synchronize with Beijing time and name it after the recording time, which makes it easy to record the file generation time, browse and find files easily. 5LONG BATTERY LIFE: Built in high energy polymer lithium battery and a new generation of power intelligent energy saving system, the recorder is light in volume, to achieve long term recording function.