EXCELLENT PERFORMANCE IN HIGHLY MINERALIZED SOILS CF77 metal detector lets you easily detect gold, single coins, jewelry, relics and other tiny objects in areas that you could not hunt before. The detector does this by providing a stable and deep search in the most difficult ground conditions. DEEPER SEARCHES & FAST TARGET DETECTION CF77 metal detector lets you reach targets at greater depth than other coin and relic detectors in this category. Enjoy smooth and stable performance even in the most difficult ground conditions. You will quickly discover that the CF77 metal detector opens up areas that you thought were previously worked out. Discover the targets that other treasure hunters have passed over with other devices. COIN & RELIC SEARCH COILS CF77 has 3 different lightweight and water resistant DD search coils to choose from! Just select the right coil for each environment to achieve the best performance. The DD design of these search coils lets you search deeply even in the toughest ground conditions. Choose from 23 cm (9''), 28 cm (11'') or 45 cm (18'') coils. The smallest search coil provides easy access to narrow areas with good target separation. The medium coil provides a good balance of depth and target separation. The largest search coil provides the deepest searches in wide open areas. With three options to choose from, you can always select the best search coil for your environment. Achieve the best performance in a variety of areas. CF77 metal detector delivers: From rocky terrain and heavily mineralized conditions to farm fields, beaches and areas littered with junk. METAL DISCRIMINATION WITH 3 DIFFERENT AUDIO TONES CF77 metal detector can reach incredible depth while still providing complete target identification and clear discrimination between metals. The unique design can prevent you from unnecessary digging by helping you discriminate between non-ferrous, gold and ferrous metals with 3 different audio tones. IRON AUDIO CF77 metal detector can eliminate the iron signals produced by the soil in heavily mineralized areas. A unique iron audio on/off feature lets you choose to detect only the non-ferrous metals by turning ferrous target sounds off completely. EASY OPERATION AND ERGONOMIC DESIGN CF77 metal detector is a user friendly metal detector designed with ease of use in mind. A clever ergonomic design and simplified controls let you hunt all day without fatigue. Both mid-level and professional users will appreciate the clever design and intuitive operation LONG BATTERY LIFE CF77 metal detector provides you with the ability to hunt all day and then some. Now you can hunt without worrying about running low on power. Powered by just 8 AA Alkaline batteries, the CF77 metal detector can easily run for 30 hours. SEARCH MODES CF77 features three modes of operation. GENERAL is a non-discrimination mode that provides maximum depth. MODE 1 and MODE 2 are a discrimination mode that provides smooth and stable operation while filtering out unwanted targets. These modes provide exceptional performance in highly mineralized soil conditions.