Support 32Hz-20KHz precise frequency sweep, and make reasonable channel settings within the range of 10Hz-20KHz. Display flip function, 17-level brightness adjustment. The spectrum of main landing speed, hold time, and descent speed can be adjusted individually. With smooth display and bottomless display mode, excellent AGC processing. Make the signal display richer. Using a professional constant current driver chip with blanking, the LED light has no problem with light and dark flickering. Colour:Black Material:plastic Package Contents: 1x Audio Spectrum 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. Display flip function, 17-level brightness adjustment. Support 32Hz-20KHz precise frequency sweep, and make reasonable channel settings within the range of 10Hz-20KHz. With smooth display and bottomless display mode, excellent AGC processing. Make the signal display richer. The spectrum of main landing speed, hold time, and descent speed can be adjusted individually. Using a professional constant current driver chip with blanking, the LED light has no problem with light and dark flickering.