What is the DVRCam different from Normal CCTV camera? 
Normal cctv camera is a camera only, and must work with additional DVR device for video recording. This DVRCam has video-out for realtime viewing, and  it can record video by itself.  You only need a Micro-Card (2GB--64GB).

Simple use -- just plug into a wall power socket, it starts to record.

Built-in BNC -- output interface for video output to monitors

IR remote control--to set up time and play back.

24hrs x 7days Recording

MPEG4 compression--smaller video size, longer recording time.

Circularly recording--never run out of storage

10s recording after power is off--continue to record even the theft cut the power off.

Easy to set up time--the time setting software is built in the DVRCam, and users don't need to

find software. Insert the TF card and connect the DVRCam to PC, click the built in software to sync.

DVRCam WR C802B specification

Video Camera B

Dimensions                12cmx12cmx10cm

Gross Weight               320g

Power Adapter             Input: C 100~240V; Output: DC 5V, 1A

Micro processor           ARM9 32-bit microprocessor core

TF Card Support           Up to 64GB

Warranty                     Two-years parts

Video Camera Details

Type                           Black

Digital Video Format     MPEG4/3gp;VGA (640 x480)  

Lens                           f=3.6mm

Field of View                90 degrees (diagonal)

Night Vision                 8m

Video Out Interface       BNC type

Minimum illumination       0.1lux/f1.2

SNR                            48db

Operating Temperature -10°C~60°C