Super ScannerVhand-Held Metal Detector

Three-color led indication green led = on amber led = low battery red led = alarm controls power switch (audible / off / silent) interference elimination switch tuning automatic audio frequency 2 khz warble operating temperatures -35o f (-37o c) to 158o f (70o c) width 3.25" (8.3 cm) thickness 1.625" (4.1 cm) length 16.5" (42 cm) total weight 17.6 oz (500 g) u.s. trademarks 1,754,933 and 3,236,345 battery requirements one 9v (included). provides up to 100 hours of normal operation.