SincereetaliDSP Digital Noise Reduction Technology: Effectively filters and attenuates noise on different occasions to accurately capture the original sound. Humble Appearance: Just like an ordinary ballpoint pen, you can hide it in your hand, a drawer, or a cloth pocket, making it discreet and unobtrusive. Power Failure Storage Design: Detect low battery and automatically save recording files, which can prevent data loss inside. 8 Flash Memory: Store 96 hours of WAV audio recordings. 48 kHz sound sampling rate and 192 kbps recording bit rate produce excellent sound recordings in any situation. Time stamp design: It can automatically name recording files by date, allowing you to search and browse files.Specification: Capacity: 8 GB Recording mode: Turn on recording and turn it off to record Recording format: MP3, WMA, WAV Recording time: 2800 (minutes) Maximum number of recording files: 999 Transmission interface: USB 2.0 Shell material: ABS metal Package Included: 1 x Recording Pen 1 x Earphone 1 x Data Cable 1 x User Manual Please Note: Due to the choice of voice-activated model, the recorder cannot record automatically. Or, choose automatic recording, it cannot support voice activation. So, by default, all recorders choose "automatic recording". That means they do not have a voice-activated model.