1、No sound, no light, no vibration during normal work, small size and exquisite appearance for easy carry. 2、Built in high energy lithium battery and a new generation of power intelligent energy saving system to achieve long term recording. 3、When the battery is low, the recorder will automatically save the file and shut down to ensure that the recording data is not lost. 4、Connect the OTG adapter, you can play and manage recording files on your mobile phone. 5、You can record when you turn on with one key, and save the recording when you turn off, adapt to various complex recording scenes. 1 x Voice Recorder1 x Earphone1 x Converter1 x USB Cable1 x Manual  Item Type: Voice RecorderMaterial: ABSModel: Q36Recording Format: WAVPlay Format: MP3 WMA WAVInterface: MicroSampling Rate: 48KHzRecording Bit Rate: 192kbpsBattery Type: Lithium BatteryBattery Capacity: 110mAh (Built In)