A:AnswerThe cameras are full color capable. The included cables are about 60 feet, and 100' extension cables are available. I have not tested to see how long they can go.
The DVR unit has 4 audio inputs but the cameras do not have microphones.
A:AnswerYes you can connect it to WiFi and store in the cloud, and no you don’t need internet to record and play back. You can record 24/7 or you can record using the cameras motion detector
A:AnswerYes, I've run DVR recordings both continues and by Motion. Continues gives me about 14 days of recording
And motion, generally 30 days depending on volume