HD recording, zero noise.Power off automatically saves the recording, automatically encrypts.HIFI MP3 music, fully in 30 minutes, continuous recording for 38 hours.Silent recording, no light display, no vibration.Rapid charging, fast forward and backward playback.Time setting forensic rights.Applicable : schoolbags, collars, drawers, inside the car, etc.Item type:MP3 Voice RecorderMemory capacity: 16GRecording format: WAVRecording time: 38 hours continuous recordingStandby time: 68 hoursRecording mode: one-click recording, one-click saving, one-click playback/pauseMicrophone: Built-in HD microphoneSampling rate: 48KHZNumber of digits: 192KBPSBattery: Built-in environmentally friendly lithium batteryUSB: mini USBColour:blackMaterial:plasticPackage Contents:1 x Voice Recorder1 x USB CableOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.