METAL MATERIAL: Mini voice recorder is forged with one piece all zinc alloy, which has stable corrosion resistance, impact resistance and wear resistance.EASY TO USE: The recorder is simple to operate, keeping up with the pace of study and work, start recording when you turn on it, quickly record the scene, no omission.NOISE REDUCTION: This mini recorder is equipped with an octa core DSP acoustic processor to help filter background noise, recording more clearly.SAFE STORAGE: Recorder is equipped with encryption technology program, effective protection of files, record your own diary files. Keyring design, portable.VOICE ACTIVATION: Pocket voice recorder supports voice activation, recording with voice, stopping without voice, saving memory by segmentation.