The size of this Mini micro DVR Portable Pocket Video Recorder is 2 1/4" x 2" x 1/2"; it comes with its own Button/Screw Camera that is powered by the micro DVR.

For wearable video recording devices where the need for concealment is paramount and one can understand why this is the first choice of professional private investigators. Micro DVR has Professional high resolution recording capability. The display on the unit is 1.5" and has the time/date stamp on the screen. View playback on the unit itself or through your computer by using the included USB cable. Uses a mini SD card (not included) This unit has a power save function, after 3 minutes of non use it will "sleep", tap the play button and the unit will resume.

The Micro DVR JS208 Specifications
1.5 LCD TFT display.
640 x 480, 322 x 240, 220 x 120 @ 30FPS.
Supports up to a 4GB mini SD card.
Recording format AVI, ASF, MOV.
45MB built in memory.
AV in and out jacks.
5V DC.
Size: 2 1/4" x 2" x 1/2".

The Button/Screw camera Specifications
1/3 Color CMOS with Audio.
NTSC / PAL / EIA.
420 TV lines resolution.
6mm Lens.
64 deg FOV.
0.3 LUX (Note: the manual states 3.0, the correct lux for the camera is 0.3 ).
5V DC.
This body worn camera can be used as a spy cam with the assorted lens. You can choose from the assorted button lens in different sizes or the screw lens in silver or black, all included with this complete spy camera set.

The Complete Set Includes:
Micro DVR.
High resolution button/screw camera.
AC charger.
Li-ion battery.
USB cable.
AV in and out cable.
3 button lenses (9 extra buttons).
2 screw lenses (6 extra screws).
User manual.
Beautiful color retail box.