Press SET to charge minutes. Press SET to change year. Toggle 12 hour or 24 hour format. Backlight automatically turns on at 10:00; goes out at 22:00. Pressing SET at anytime will make the clock display the date.And scroll back to the time. The item "Clock Nixie IN12 6Tube Amber Tubes Vintage Assembled Retro Clock No Wooden Box" is in sale since Tuesday, April 16, 2019. This item is in the category "Consumer Electronics\Vintage Electronics\Other Vintage Electronics". The seller is "denysemyzho0" and is located in Columbus Ohio 43235. This item can be shipped worldwide.