Audio Output: Tone frequency varies with gradient field intensity 
Sensitivity: 5 settings
Input Power: Two 9V Batteries
Battery Life: 40 hrs (intermittent usage)
Weight: ~ 2.5 lbs (1.13 kg)
Operating Temperature: -13°F to 140°F ( -25°C to 60°C)
Overall Length: 42.3 in (107.4 cm)
Waterproof Length: 34.5 in (87.6 cm)
Sensor Spacing: 20 in (50.8 cm)
Housing Material: Aluminum