It's an X-TERRA 705 with both the standard Treasure coil (7.5 kHz) and the Gold Pack coil (18.75kHz).
Get the best of both worlds by using: the 9″ Concentric 7.5 kHz waterproof coil for all around detecting and treasure hunting. then quickly switch to the 10″x5″ DD 18.75 kHz coil for gold prospecting.
The X-TERRA 705 offers the ultimate detecting experience. It can be used for gold prospecting as well as for coin & treasure hunting, simply by switching between available pre-programmed modes. With both Gold Prospecting and Coin & Treasure Modes you get a gold detector plus coin, treasure & relic detector all in one!