1、When external sound is very small, machine enters the voice control state to suspend recording until the external sound returns to normal, machine automatically starts recording. 2、One key voice control recording, long press starting up button for about 2 seconds, red indicator lights long bright, recording pen starts up, voice control recording automatically starts after starting, blue light flashes for 5 times when recording, then automatically goes out. 3、Recording stop: When the recording duration is turned on, the red and blue lights will flash alternately to shut down and automatically save the recording file. 4、Playback: After the recording stops, upload the recording file to the computer or phone in the shutdown state and play it. 5、Made of high quality aluminum and plastic material, sturdy, durable and long service life. 1 x USB Flash Disk Recording Pen Condition: 100% Brand NewItem Type: USB Flash Disk Recording PenMaterial: Aluminum + PlasticColor: As Pictures ShownCapacity: 8GBPower Supply: Polymer Battery 3.7V 80mAhRecording: Format WAV，192KbpsRecording Time: 12 HoursInterface: USB、micro USB(Support OTG Function Mobile Phone)Charging Time: About 1H,（Built-in Polymer Battery 3.7V 80mAh）Support System: for Windows2000/XPista/7/8/10/AndroidQuantity: 1PCS Weight: Approx. 25g