Ultrasonic Leak Detector, Includes Carrying Case, Earbuds, PB-1 Power Parabola, Receiver, TE-1 Tubular Extension, TEA-1 Flexible Tubing Adapter, Digital Display Screen Type LCD, Product Type Ultrasonic Leak Detector, Display Size 2.5 in, Maximum Frequency Response 90 kHz, Minimum Frequency Response 20 kHz, Testing Functions Electrical Discharge, Gas Leakage, Video Image Resolution 240 x 320, Standards CE Certified, Batteries Included Yes, Number of Batteries Required 4