Hey RomanL1 the differences between the two models are as follows;
T60:
*PQI 3.100
3 HDMI connections
50Hz native refresh rate
Full HD and UHD resolution: 10 ms
no VRR
T70:
*PQI 3,400
4 HDMI connections
Input Lag;
Full HD: 12 ms
UHD: 9 ms
Full HD VRR: 7 ms
UHD VRR: 15 ms
*(Picture Quality Index)