Product Name: Sk-220d Infrared Imager for Hunting Night Vision IR Hunting Optics Model NO.: Sk-220d Aperture: 50-100mm Focusing Type: Internal Focusing Objective Aperture: 30~50mm Lens Type: Prime Lens Structure: Refractor Telescope Usage: Bird Watching/Hunting Function: Infrared Magnification: 2X Type: Infrared Telescope Pixel: 220*160 Model Number: Sk-220d Brand Name: Sk Image Frequency: 9Hz Trademark: sk Transport Package: Carton Specification: Sk-220d Origin: China Product Description Digital 2X Zoom Infrared Imager 220*160 NETD Resolution for Hunting Night Vision IR Hunting Optics for NightDetector typeUncooled focal planeResolution220*160 infrared focal planeFocal length6.52mmWavelength range8um~14umField angle35*26Image frequency9HzDigital zoom2 timesPalettered thermal, black thermal, rainbowFocusing modeFixedBatterybuilt-in rechargeable batteryUSBMICRO USB 2.0Shutdown time5 minutes (automatic shutdown time)Image storageJPGGross weight450gProduct size133*55mm/5.23*2.16''Working temperature0ºC~45ºCStorage temperature-20ºC~60ºCMeasurement range200 metersQ: What is the difference between night vision and telescope1: The telescope is an optical instrument that directly uses the lens to magnify the angle of view of the object in the retina for imaging.Can not be viewed in a completely black or low light environment;Night vision is an instrument that uses the principle of image enhancement or infrared imaging to observe, and its clarity is not as good as that of a telescope.But it is suitable for viewing in the environment of all black or starlight moonlight.2: The principle is different, the telescope is lens optics, is an optical instrument; and the night vision device is an infrared instrumentShanghai Dutai Imaging Technology Co Ltd has many years of experience in production and market.Our group dedicated to make product,applicate ,sale and syster development in the infrared measurement product, industrial machinery accessories, electronic accessories .customers can solve various complex industry applications in time. Our products can provide accurate experimental data for scientific institutions . Provide safety guarantee for industrial production and provide accurate automation control data for enterprises.Shanghai Dutai Imaging Technology Co., Ltd. provides many products such as: SNKE Infrared Thermograph, SNKE Thermometer, SNKE Infrared Telescope, Dutai Buffer, Dutai Shock, Dutai Chiller, Dutai Magnetic Switch, SNKE Crystal Head and power public plug.our Products can be widely used in scientific research institutions, aerospace, electric , metallurgical petrochemicals, monitoring, marine affairs, steel and glass metering, new power supply, machinery, chemistry, Biopharmaceuticals and other industriesOur concept: we will be professional and careful choice, appropriate price, quality service and make a brilliant futurewith our parter.At present,we have cooperative production relations with many domestic companies.we can undertake customized OEMproducts.