900 MHz wireless headphone vs. Digital

cs1188

New Member
Aug 2, 2009
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I have a pair of 900 MHz ROOTS stereo wireless headphones which cost about $80 7 yrs ago and needing new rechargeable battery.

Question 1: Which kind of wireless technology is used now ??

Question 2: Is digital alot better than 900 MHz ??

Question 3: what about interference ??

(I live within 50m of above ground metro trains and my lights flicker and I loose cordless telephone calls when the trains run by).

>> Thank You very much.
CS1188