Operates at 71 kHz, the highest sensitivity for tiny sub-gram flakes. Garrett Axiom
Look for Automatic Ground Tracking if you are a beginner, or Manual Ground Balance if you want full control in changing soil conditions.
Are you planning to search in or riverbeds , or
Small coils (6–8") are better for sensitivity and navigating rocky areas, while large coils (11" +) provide more depth and ground coverage.