The Emissivity / Temperature Calibration is an Extremely powerful, expensive and important feature! :  you to manually calibrate the thermometer by adjusting the emissivity values. It is extremely important because different materials emit radiation at different levels, for example, If water and aluminium foil are heated to the same temperature, most non-calibrated thermometers would still say the aluminium foil is many times colder than the water. That vast error would be due to the different emissitivty value of each material, and this is why emissivity calibration makes this thermometer vastly superior in accuracy to its competition. (details/instructions below).

The Infrared (IR) : sensor on this device is long 'unlimited^' range and contact free, allowing you to continuously measure surface temperatures of places you would not normally touch with your bare hands or with a thermometer, and you can do so from at a safe distance. This also saves you a lot of time and hassle of repeated cleaning since you don't touch the surface you are measuring. The Infrared sensor works like a super sensitive camera, measuring the infrared wavelengths of light that are being emitted by an object.

The Thermocouple (TC)  : sensor is short range spot contact sensor and generally takes the maximum temperature of whatever it is in direct physical contact with (any solid, liquid or gas it touches), it measures the temperature of the object it is in through the simple transfer of heat from the environment it is in, to the microscopic Peltier Junction at the tip (which detects temperature based on the Peltier–Seebeck effect). By relying on physical contact, this probe is not affected by transparency, interference or reflection problems that affect the other infrared sensor, making it an excellent companion in this device.

The -30˚ C to 550˚ C Temperature scan range : on this device allows you to measure temperatures from a freezing -30 Degrees Celsius (-22° F) all the way to a scorching 550 Degrees Celsius (1022° F) that normally only expensive industrial IR thermometers can reach, others usually only go up to 340 degrees.

Adjustable High and Low Temperature flashing alerts and Minimum, Maximum, and Average : temperatures can be displayed at the touch of button as you scan various objects, so you will know if your set temperature has been breached; you don't have to constantly watch the numbers.

The Large Clear Illuminated LCD display 
comes with a soft blue white backlight that is not distractingly blinding as others on the market.

SPECIFICATIONS :

Come with :
 1.  IR-Thermometer
 2.  K-type thermocouple
 3.  9 V battery
 4.  User manual