CT1 or CT10 sensors

Hi all,

I have an S70 approach and was about to buy the CT10 sensors for game tracking.

ive just seen the CT1 sensors have been released today and are listed as compatible with S70. 

what is the difference between the two sets of sensors. CT1s are half the price of the CT10s, but otherwise I can’t see what the benefit of buying the CT10s over the CT1s would be at double the price 

thanks