the world's smallest wireless color pinhole camera with audio, it's so small you can hide anywhere! it is easy to setup and simple to operate. everything you need is included! ...just hook it up to your tv and/or vcr, and you're ready to go! whether you're an investigative professional, a weekend surveillance enthusiast, or just looking for a little security or reassurance, it is perfect for the job! features: cmos color / 2.4 ghz/ wireless/audio. frequency contorl: adopt cpu frequency lock the wreath to control, with high frequency stability. rule:pal/ccir ntsc/eia. effective picture element :pal:628x582 ntsc:510x492. horizontal definition :380 line. minimum illumination: 3 lux. scan frequency: pal/ccir: 50hz, ntsc/eia: 60hz. sensitivity: +18db - agl on-off. output power: 50 - 300mw . distance: 50 - 500m . electric power: dc5v~9v . current: 200ma. power consumption: <= 640mw. size:35x38x48mm. more surveillance products info pls visit our website at www.szkws.com