Not much larger than a 9 Volt battery, the MiniSpyCam-900 is ideal for scenarios where only battery use is feasible.

• Easy to use Plug & Play
• Size: only 1.37-inch x 2.1-inch x 0.65-inch
• Ideal for Portable, Temporary and Covert Surveillance or monitoring applications.
• Low current consumption for convenient battery operation.
• Eliminates the need for cabling or trenching.
• Send video from locations normally not possible, convenient or economical with cable .
• Outperforms 2.4GHz for penetration through walls.
• Outperforms 2.4GHz for mobile or bodycam application.
• Includes Universal Camera Mounting Bracket, AA Battery Pack Holder,
  12VDC Power Supply, and Battery Snap Cables.
• Operating Frequency: 906MHz
• User Selectable Channels: None
• Radiated Power: 50 mV / m @ 3m
• Operating Distance Line of Sight: Up to 1,000 feet
• Operating Distance Indoors: Up to 400 feet
• Range with Optional Rx Antenna: Up to 2000 with Yagi-9001
• Video Format: NTSC ( PAL Format Optional )
• Antenna Type: Fixed Omni-Directional
• Camera Type: 3.7mm Color CMOS
• Resolution: 380 Lines (H) x 350 Lines (V)
• Minimum Illumination: 2 Lux
• Temperature Range: -22 to 140 F
• Weather Proof: No
• Operating Voltage: 9 - 14 Volts DC, Polarity Protected
• Power Supply: Included
• Current Consumption: 75mA @ 12 VDC
• Dimensions: 1.37-inch x 2.1-inch x 0.65-inch
• Weight: 0.8 oz. or 23.0 grams
• FCC/IC Approved: Yes
• Includes: Reciever, Universal Mounting Bracket, RCA Video Cables and BP-900 AA
  Battery Pack Holder
• One Year Limited Warranty.