1. Does this devices support PLAYBACK on its monitor
------Yes
2. What is the format of video,and what is the size?
------ AVI Format, About 0.85mb-0.96mb/min
3. If resolution can be adjustable or not?
-----------it supports 720*480P,640*480P
4. If it was record automatically when power on?
---Yes,it is
5. Whether cyclic record is supported?
---Yes,it is
6. Whether there is a possibility to set local time and date in the recording?
-Yes,you can.
7. Is it has night vision?
--No,it does not support night vision
8.Is it HDMI slot valid or not?
--No,it was blocked by factory.
9.Supports SD/MMC card?
----Yes, From 1GB up to 32GB, 4gb sd memory card is included in package.