... 3.Automatic Gain 4.Real-time Clock 5.Display Freezing Ultrasonic Flaw DetectorFunctions1. Wave peak memory: real time envelopes show ... of harsh environments from sea to desert. 2. Pan-seal design, including tool housing, battery case, fastening screws, and external ... 11VDCWorking hours of the batteries: 8 hours. Casing: pan-seal design of IP67 standard, real waterproof, damp proof, and dustproof. ...