Garrett/Whites Goldmaster 24K is definitely a VLF. It's single frequency 48 kHz so it is geared for smaller target gold prospecting.
It has Whites XGB ground balance tech which is really good if the soil isn't too mineralized whether magnetite or salt. Not the best choice for saltwater beaches. It is not waterproof either. I would pick a Vortex VX7/9 for saltwater beaches.
Does not have wireless audio or an internal rechargeable battery. It uses 8 AA batteries. Rechargeables work great and it comes stock from Garrett with 8 rechargeable AAs and a good charger.
It has a one tone threshold based VCO audio mode for prospecting with a ferrous/non ferrous chance indicator and displays numbers to go with that ferrous/non ferrous chance indicator. If your ground is not very mineralized, those displayed numbers can work as target IDs but they will up average the target IDs of low and mid conductor targets a lot the deeper the target.
The Garrett/Whites 24K also has a two tone discrimination ferrous/non ferrous audio option which can be used for gold prospecting, micro jewelry hunting or whatever kind of detecting needed. It reminds me of the original MXT two tone audio with low iron tone, mid threshold tone and a higher non ferrous tone.
The threshold tone can also be turned down to minimum level where it basically can't be heard for those that don't like a live threshold tone.
I used mine for sand and bark playground, freshwater beach and volleyball court micro jewelry hunting where digging it all was the approach. It works fine for that. The ground where I detect is too mineralized for general coin hunting using a single frequency VLF like the 24K especially if I want reliable target IDs for accurate information so I can selective dig going for deeper coins or jewelry. Again, I would pick a Vortex VX7/9 for deeper coins, jewelry or relics. The Vortex simultaneous multi frequency tech makes it much more versatile and usable for a wide range of detecting scenarios. The VX9 is actually pretty good for gold prospecting too.
The Goldmaster 24K was built by Whites using the MX7 form factor. It has the nicest color display currently made in my opinion and thankfully does not do what the MX7/MXT did and display what the target is in words. At least where I detect, the MX7/MXT would display US quarter for just about every target if it was deeper than 3". That got pretty old thinking I was digging a quarter and it was actually a small piece of foil , small can slaw or a normal pull tab........... Garrett went over it carefully, upgraded the coil quality and released it almost exactly as Whites made it. It even has the Whites emblem molded into the plastic on the back of the control box housing.
It is the only detector that currently Garrett makes which is directly from their Whites purchase.
That says a lot.
Awesome detector for the right places and uses.