It supports 32Hz-20KHz accurate frequency scanning, and reasonably sets the channel within the range of 10Hz-20 KHz. Display flip function, 16 level brightness adjustment. The spectrum of main landing speed, holding time and descent speed can be adjusted separately. Smooth display and bottomless display mode, excellent AGC processing. Make the signal display richer. With constant current driver chip and blanking technology, LED light has no problem of light and dark flicker. size: 176 x 50 x 28mm Material: Electronic component colour: As shown Package Contents: 1 x spectrum analyzer Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.