K-II METER
•        Detection Range: 0 to 20+ milliGauss
•        Detection Frequency: 50/60 Hz (50 to 1000Hz - ELF) (1000 to 20,000 Hz - VLF)
•        Accuracy: 5% (typical)
•        Operating Temperature: 0 to 120 Degrees F (-18 to 49C)
•        Battery Requirements: 9 Volts
•        Size & Weight: 5.7 inches long x 2.25 inches wide x 1 inch high, 6 ounces.