The selected region appears to show a handheld conductivity, TDS, and salt meter (resembling a Lutron YK-22CTA or similar testing device) inside a protective carrying case.Device FeaturesScreen: Digital LCD display for measurement readouts.Buttons: Power, hold/esc, range, and calibration/set controls.Probe Connection: Cord for attaching the testing sensor.If you'd like, let me know:What substance or liquid you are testingIf you need help finding a manual or calibration steps