Most DVR's in the market can record video at 320X480 @15 FPS, one other model can do as much as 640X480 @ 15 to 18 FPS. Some claim that you can upgrade the firmware and get better resolution...(that's simply not possible as resolution can not increase without degradation of the image, it's like blowing a balloon with writing on it, sure you can make it bigger but past some point the image will degrade).
Resolution simply put is the SIZE of the image, 640 pixels horizontal by 480 pixels vertical, which is perfect as these just happen to be your PC's VGA standards.
Compare at: $159.00
Compare at: $200.00
Compare at: $179.00
Self Contained Hidden Cameras / Nanny Cameras