The sensors work well. But you have to spend some time with the setting of the respective sensitivity. Somewhat confusing is the LED indicator. Depending on whether and what (PC power supply) the camera is currently connected, same LED signals have different meanings.
The expandable timestamp is not buffered and has often times using the included software (runs under Win 7 without any problems) are synchronized. A pity, I find that the length of the records is not adjustable.
One more thing: Although I operate the camera with a high-quality 32GB Micro-SD, individual recording blocks are sometimes not readable or corrupt. Whether this is due to the card or the device, I can not judge.