Small Desk Atomic Alarm Clock for Bedroom, Self-Calibrating Time and Date Clock with 4 Time Zone, DST, Temperature, Humidity, Alarm and Snooze for Children’s Bedroom, School

【Auto Synchronization of Time & Date with WWVB】This clock has a built-in receiver that automatically syncs time & date with the WWVB radio signal from Fort Collins, Colorado. Daily synchronization occurs between 1:00 AM–5:00 AM. Choose from 4 time zones: EST, PST, MST, or CST. Signal reception is stronger in central regions but may be weaker in coastal areas. For better reception in eastern/western cities, place near a window or in an open space. If the signal is weak, switch to manual adjustment mode
【Auto Daylight Saving Time】When DST is turned on, the time will automatically advance by one hour when daylight saving time begins. It is recommended that you check that daylight saving time is observed in your region before turning on DST
【Temperature & Humidity Monitor】Accurate tracking of indoor conditions, Temperature Range:14°F to 140°F(-10°C to 60°C), Humidity Range: 20% to 95% RH. Air Comfort Indicator provides instant visual feedback through three levels: COMFORT (humidity 30%-60%), DRY (humidity60%)