Features1.Blind Operation Type Recording: Ballpoint pen type mechanical rebound switch, press to start recording (pen hat lower), and then press to end recording and save (pen hat rise).2.Multifunctional: When recording data, digital voice recorder can record while writing to achieve two way recording, and can also replace the pen refill as a signature pen.3.Noise Reduction: Pen digital voice recorder uses an acoustic 8 core DSP noise reduction module, which has a certain reduction effect on environmental noise.4.Connection Upgrade: Connect OTG adapter to manage and transfer files on the phone, support for Android and for iOS phone connection, plug and play, simple and convenient.5.Applicable Headphones: Plug in the headphones can play music and recording files, support in line headphone control to switch songs, fast forward and back, volume and confirm and delete.6.Durable Material: Metal alloy material, CNC process manufacturing and baking paint electric transition process to build, durable, anti?oxidation, anti scratch characteristics.specificationItem Type: Pen Digital Voice RecorderMaterial: Copper AlloyBuilt in Polymer Lithium Battery: 180mAhRecording Time: 15HPlayback Time: 10HCharging Time: 2.5HRecording Format: WAVPlayback Format: MP3, WMA, WAVPackageList1 xPen Digital Voice Recorder1 x Charging Cable1 x Earphone1 x Instruction Manual3 x Pen Refill