4K TV Help Please

[EpicDragon1]

Hello Would anybody be able to help me with this 4K TV i want to buy what i would like to know what is the refresh rate of the TV i can't it anywhere all it says is
PQI 1300 (Picture Quality Index) What does that mean i just want to what the refresh rate is Thank you
1300http/www.samsung.com/uk/consumer/tv-audio-video/televisions/uhd-tvs/UE40KU6020KXXU

 

[Titillating]

It has a native refresh rate of 60Hz, artificially inflated to 120Hz through included software.