Atomic Wall Clock with Indoor/Outdoor Temperature, Self-Setting - Digital Wall Clock - Battery Operated - 4 Time Zones w/ DST (Black) Your price = $34.99 𝗔𝗰𝗰𝘂𝗿𝗮𝘁𝗲 𝗔𝘁𝗼𝗺𝗶𝗰 𝗖𝗹𝗼𝗰𝗸 - Has a built-in receiver that automatically synchronizes itself with the WWVB radio broadcast, which will update time automatically every midnight to ensure accurate time. It has 4 time zones: EST, CST, MST, PST. 𝗔𝘁𝗼𝗺𝗶𝗰 𝗖𝗹𝗼𝗰𝗸 𝘄𝗶𝘁𝗵 𝗜𝗻𝗱𝗼𝗼𝗿 𝗮𝗻𝗱 𝗢𝘂𝘁𝗱𝗼𝗼𝗿 𝗧𝗲𝗺𝗽𝗲𝗿𝗮𝘁𝘂𝗿𝗲 - Can display both indoor/outdoor temperature. The wireless outdoor sensor monitors and transmits the outdoor temperature to the clock to display. The sensor should be placed within 330 ft and out of direct sunlight or rain. 𝗗𝗶𝗴𝗶𝘁𝗮𝗹 𝗔𝗹𝗮𝗿𝗺 𝗖𝗹𝗼𝗰𝗸 𝗕𝗮𝘁𝘁𝗲𝗿𝘆 𝗢𝗽𝗲𝗿𝗮𝘁𝗲𝗱 - Supported by 3 x AAA battery and outdoor sensor is supported by 2 x AA battery. (Batteries are not included). 𝗟𝗮𝗿𝗴𝗲 𝗗𝗶𝘀𝗽𝗹𝗮𝘆 𝘄𝗶𝘁𝗵 𝗧𝗲𝗺𝗽𝗲𝗿𝗮𝘁𝘂𝗿𝗲, 𝗗𝗮𝘆 𝗮𝗻𝗱 𝗗𝗮𝘁𝗲 - Two temperature modes switchable (C / F). When click button, both indoor and outdoor temperature exchange mode at the same time. There are also two display modes of time selectable: Standard Time and Military Time. 𝗔𝗨𝗧𝗢 𝗗𝗦𝗧 𝗮𝗻𝗱 𝗔𝗹𝗮𝗿𝗺 – With DST on, clock will go forward or fall back one hour automatically in daylight saving time. When DST or alarm is on, there would be a corresponding icon staying on screen. Both of them could be turned off manually if for no need.