Feature:1. EASY TO OPERATE: MP3 recorder pen supports one touch power on, one touch power off, write and record for emergency recording or a variety of scenarios.2. NOISE REDUCTION: DSP digital noise reduction technology, for different types of noise in the environment, filtering and attenuating environmental noise.3. INTELLIGENT PASSWORD PROTECTION: Voice activated recorder supports password setting for power on and off, to protect sound data.4. 360 DEGREE RECORDING: Voice recorder pen supports 360 degree recording without dead space, can easily put in pockets, bags, drawers to record.5. SAVE MEMORY SPACE: Recorder pen is recorded when there is sound, no sound on pause. Extend the length of recording, save memory space.6. ACCURATE TIME STAMP: Voice recording pen records file creation time and end time, accurate to the second, easy to browse and find files.Specification:Item Type: Voice Recorder PenMaterial: ABSRecording Format: WAVMusic Format: MP3 WMA WAVBuilt In Polymer Lithium Battery: 120mAhSize: Approx. 13.3x1.2cm / 5.2x0.5in.Package List:1 xVoice Recorder Pen3 x Pen Refill1 x Instruction Book1 x Charging Cable1 x EarphoneNote:Please allow some error due to manual measurement.