Feature 1EASY TO USE: Mini Voice Recorder can record when it is on, record when there is sound, stop when there is no sound, save in segments, save memory. 2NOISE REDUCTION: Keychain voice recorder is equipped with an octa core DSP acoustic processor, which helps filter background noise and record more clearly. 3ENCRYPTION TECHNOLOGY: Voice activated recorder is equipped with an encryption technology program to effectively protect files and record your own diary files. 4ZINC ALLOY: Digital mini voice recorder is forged with a one piece all zinc alloy, which is impact resistant and wear resistant. 5WITH EARPHONE: Keychain digital voice recorder with headphones, immerse yourself in the world of music, and support in line operation.Item Type: Keychain Voice RecorderMaterial: Zinc AlloyRecording Mode: Power On Recording, Power Off SavingRecording Format: WAVPlayback Format: MP3 WMA WAVBuilt In Polymer Lithium Battery: 120mAh .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List1 x KeychainVoiceRecorder1 x Charging Cable1 x Earphone1 x Instruction Manual