Features: *Knob "yOL” Rotate to the right to turn on the machine. Continuingto rotate can increase the volume to maximum sound. Rotate to the left toturn down the volume un(Alt 4 A) led off* Knob "SQ” When the radio switches frequencies, there will be harshnoise. With this knob, you can adjust a signal threshold to automaticallymute when switching channels in different signal environments.xKnob "TUNE" This knob can be rotated or pressed to adjust frequencyand other parameters.*Accessory includes a USB TYPEC charging cable, a 75CM pullrod.Usage tips: Touching the radio with the human body can enhance thereception signal strength, and inserting headphones can also increase thesignal reception strength.*3.2 inch LCD display ,built-in speaker, and support for headphonesSpecifications:Name: TEF6686HN high-quality DSP chipRadio range: FM (65 - 108MHz) & SW/MW/LW (144 - 27000KHz) radio rangeSize:3.2 inch LCD displayPower supply: Type-C charging interface, large capacity lithium batteryRod antenna length:75cm Material: all aluminum alloy shellVolume: 16.5 x 7.5 x 3cmPackage Included:1PCS Digital Radio