1、DURABLE MATERIAL: Digital voice recorder pen is made of metal alloy, CNC process manufacturing and baking paint plating process, durable, anti oxidation, anti scratch. 2、ONE BUTTON OPERATION: Ballpoint pen type mechanical bounce switch, press to start recording (pen cap lowered), and then press to end recording and save (pen cap raised). 3、MULTI PURPOSE: When recording data, you can write while recording, to achieve two way recording, you can also replace the pen refill as a signature pen use. 4、NOISE REDUCTION: Voice activated recorder pen with acoustic 8 core DSP noise reduction module, for environmental noise has a certain reduction effect. 5、SUPPORT OTG: Connect OTG adapter to achieve cell phone management and file transfer, support for Android and for iOS cell phone connection, plug and play, simple and convenient. 6、CABLE CONTROL: Plug in the headset can play music and recording files, support cable control headset, control switching songs, fast forward and backward, volume and confirm or delete. Item Type: Voice Recorder Pen Material: Copper Alloy Built in Polymer Lithium Battery: 120mAh Recording Format: WAV Playback Format: MP3, WMA, WAV 1 x Recording Pen 1 x Charging Cable 1 x Earphone 1 x Instruction Manual 3 x Pen Refill