Specifications:It can measure the oscillation frequency of most common crystal oscillators.With programmable addition and subtraction frequency settings, it can be used to measure radio transceivers and other equipment.The power saving mode can be selected, if the frequency does not change significantly within 15 seconds, the display will be turned off automatically.Item Name: Frequency MeterMaterial: ABS PlasticProduct Specifications: 1Hz-50MHzFeatures: Measuring Meter, Easy to Use, with Shell, DurableSize: 13cm x 10cm x 9cm/5.12" x 3.94" x 3.54" (Approx.)Notes:Due to the light and screen setting difference, the item& 39;s color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.Package Includes:1 x Frequency Meter