Application Coin, Relic, Jewellery. Beach & Park Coil (standard) 8″ waterproof coil Audio Output Internal speaker & 3.5mm headphone jack for headphones (not supplied, optional accessory) Detect Modes 2 Audio tune 5 volume levels Sensitivity Adjust 3 Levels Battery 4 x 1.5V AA Alkaline/Carbon/Lithium or NiMH/NiCad (not included) Length Collapsed: 21.9 in / 555 mm Extended: 51.4 in / 1305 mm Weight 2.2 lbs / 1.0 kg Features: • High tech entry level detector. • Easy for anyone to use. • Compact and no assembly. • Lightweight. • Automatic ground tracking and noise cancellation. • Waterproof coil up to 8 inches. • Internal speaker and 3.5mm headphone jack. • Four discrimination mode with option to remove one.