Unitek DX02 User Manual page 7

Figure 1
Access the playback thumbnails of video and audio files, push the
playback key to access the full screen playback mode, and push the
playback key once more to start playing back the files. Pushing the
playback key while video and audio files are played back may
suspend the playback, pushing the playback key once more may
continue playback, and pushing the menu key in process of
playback may return to the preview mode; When playback is over,
the machine may automatically return to the thumbnail playback
mode.
Note: Pushing the photo taking key while video files are
played back allows the machine to implement fast backward
playback, and pushing the recording key allows the machine
to implement fast forward playback.
2.6.2 Playing back the image files
After selecting the image file in the thumbnail playback mode,press
the playback key to enter the full-screen playback mode. Press the
audio recording key or photo taking key to scroll to the previous or
next file. Push the menu key to return to the preview mode.
Figure 2