How to set up sleep function and one -click static of Retekess TR110 SSB radio

UK link：www.amazon.co.uk/dp/B0B9G5JRHN
Portable full band radio; MW; FM; SW; CB; UBD; weather band with alert; airband for users frequently take plane; multiband radio with SSB; single side band is efficient to get long range information
Modern DSP digital demodulation technology; improves the receiving sensitivity and selectivity of world receiving radio by multiple bandwidth settings
Keypad lock and mute function; short press lock button enter the mute mode; long press to lock button for 2 seconds to lock/unlock keypad; avoid accidentally changing settings
Sleep timer function; long press power button of portable shortwave radio for 2 seconds to activate sleep timer; set from 10-90 minutes; suitable for turning on before going to bed to save power

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ssb radio