AW MD5008 Pro Underground Metal Detector Pro Treasure Search Digger Gold Outdoor Light weight design, easy to transport; Ground balance & Good discrimination ability Sensitivity: small coil 9.84"-11.81"(25-30 cm), big coil 11.81"-15.75"(35-40 cm) Max detection: small coil 5ft(1.5m), big coil 9.84'-11.48'(3-3.5 m) Operation mode: ground balance mode & discrimination mode Hidden cable to be more organized; Power supply: 8pcs 1.5V batteries