Three Tone Audio Discrimination Benefit: Quickly identifies metal type by listening to three tones (, medium, low), helping you distinguish valuable targets from common junk without guesswork. Notch Benefit: Ignores junk metal and focuses on valuables by setting the disc and notch range, increasing your chances of finding desirable items. Super Slow Sweep Identification Benefit: Uses a very slow sweep of the search coil to improve discrimination and accuracy when identifying different metal types, reducing unnecessary digging. Headphone Jack Benefit: 3.5 mm headphone jack allows private listening and easier operation in noisy or outdoor environments; headphones are not supplied. Key attributes Function: Three tone discrimination, notch filtering, and slow sweep identification to enhance metal detection accuracy. Compatibility: 3.5 mm headphone jack for optional private listening. Accessories: Headphones not supplied. Performance: Designed to improve target identification and minimize digging of nonvaluable metals. Practical use scenarios Park or playground coin shooting: Quickly differentiate coins and jewelry from junk metal with threetone audio and notch filtering. Beach or shoreline treasure hunting: Use slow sweep identification to accurately discriminate targets near sand and saltwater, reducing unnecessary digs. Old buildings or grassy fields: Set the notch range to filter out common metal scraps and concentrate on potential valuables as you sweep.