I have zebronicss keyboard wich is very low quality key press. one timme it press 2 alphabet see some of my sspelling are wrong in this review becose of twice alphabet. I have buy it just before 2 week. I think it is not friendly ffor nneww or old user . no key reliability I can see in it. quality is bad. so bad. no need of extra features just need quality test before sale in market . value is right butt compere to performance is waist of money and time