What is the Hearing Aid Compatibility (HAC) on zenfone 2? Thanks

[AC Question]

The HAC is stated in Mx/Tx where the x is a number from 1 to 4 where 4 is best. Thanks

 

[Raptor007]

Well I wear hearing aids in both ears, I spent about $5k last year on my Phonax units and t came with a BT unit that pairs with my hearing aids which is pretty cool.