Features 1.EASY TO USE: Ballpoint pen type mechanical rebound switch, click to start recording (cap lowered), and then press to end recording and save (cap raised). 2.RECORD WHILE WRITING: Digital voice recorder pen can record while writing, enabling two way recording, and can also be used as a signature pen with a replacement refill. 3.PLUG AND PLAY: Voice recorder pen can be connected to OTG adapter to manage and transfer files on cell phones, support for Android, for iOS cell phone connection, plug and play. 4.WITH EARPHONE: Plug in the headset can play music and recording files. Support in line headphone control to switch songs, fast forward and backward, volume and confirmation, delete. 5.NOISE CANCELING: Voice activated recorder pen uses acoustic 8 core DSP noise reduction module, which has a certain effect on reducing ambient noise. 6.COPPER ALLOY: Voice activated recorder is made of copper alloy, CNC process manufacturing and baking paint electro transition process to create, anti oxidation, anti scratch. specificationItem Type: Voice Recorder Pen Material: Copper Alloy Built In Polymer Lithium Battery: 120mAh Recording Format: WAV Playback Format: MP3, WMA, WAV PackageList1 x VoiceRecorderPen 1 x Charging Cable 1 x Earphone 1 x Instruction Manual 3 x Pen Refill