Standard Coil 8” (20 cm) Concentric Waterproof Coil Yes Batteries 9-Volt Alkaline (not included) Battery Indicator Yes Battery Life 20-25 hrs. Pinpoint Mode Yes Target ID 1 - 99 Target-ID Numbers Audio FeTone®, Adjustable Iron Audio – Adjust the audio volume of iron targets independent from non-ferrous targets V-Break®, Variable Breakpoint – Industry’s first variable breakpoint tone discrimination system Volume Control Yes, adjustable 1 - 20 Discrimination Modes Variable Iron Discrimination – This is a digital feature allowing full range adjustment of discrimination, 0-39 Discrimination Adjustment 1 - 79 Sensitivity Adjustable 1 - 10 Operating Frequency 7.81 kHz Depth Indicator Yes, 5-segment Weight 2.4 lbs. (1 kg) Length Length: 37.25” – 50.5” (95 cm – 128 cm) Headphone Jack Yes, ¼” (6.3 mm) Ground Balance Factory Preset Backlight No