FeaturesThree Tone Audio DiscriminationAdjustable Stem with Weatherproof search coilAnalogue Display Shows the type of metal detectedHeadphone Jack Socket (Headphones Not Supplied)Feature packed metal detector that with practice can be used to detect between gold, silver, ferrous and aluminium metal. The Altai Treasure Seeker 2 Hobby Metal Detector has a waterproof 200 mm coil and an adjustable arm for comfort and ease of use. The output can either be heard via the inbuilt speaker or viewed on the analogue display with ferrous/non-ferrous markings with LED indicators.