[Elecraft] K3 x K3S - Is There a Difference from an Operational Standpoint?

[Michael Crestohl]


Is there any significant difference in the operational features between the K3 and the K3S?
The reason I ask is that I have a K3S and have been looking for a Nifty Guide for it without success.  I was offered a Nifty Guide for the K3 and I am wondering if the two models hand similar operating features since they appear to have the same controls.
Thanks for the help.
73,
Michael, W1RC