Specification: Voice control operation: record when there is sound, stop when there is no sound, save storage space, turn off voice control, and enter the normal recording state. This recording pen is equipped with an intelligent dynamic noise reduction recording microphone, so you can easily enjoy clear recording and playback. In the voice detection mode, when a voice is detected, it will automatically start recording without being known to the surrounding people. When no voice is detected, it will automatically end recording and save voice data. Press power on to start recording, power off to save recording, and automatically save recording files every 4 hours. The dog is cute and small. It can be used as a pendant to decorate your bag and belongings. It has strong concealment as a recording pen. Small body, high energy, 400mah high power polymer lithium battery Very suitable for memos, lectures, meetings, interviews, etc. This is a wonderful gift for teachers, students, lawyers, writers, etc. As a tape recorder, it is extremely small and ultra light. It can be put in a pocket or bag in front of the chest. It is very convenient to carry. Specification: Material: Plastic Battery Capacity: 400MAH Storage: 8G Size Chart: Size: 60 x 45 x 35mm/2.36 x 1.77 x 1.38inch Package Includes: 1 Piece Keychain Voice Recorder 1 Piece Manual 1 Piece Usb Cable 1 Piece Earphone Note: 1.Please allow 1~3 cm error due to manual measurement, thanks. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.