Radio alarm clock with automatic time setting - Time sync by radio signal: After connecting to power, the radio signal indicator flashes and the clock automatically sets the correct time within 3-10 minutes. - Compact and sturdy: Dimensions 23.5 cm W x 1.8 cm D x 9.3 cm H; weight 245 g. Material: Plastic. Includes power adapter. Button cell not included (used only to store settings in case of power failure, not for power supply). - Multifunctional desk clock: 12/24 hour display, date, and temperature readout. Fahrenheit/Celsius adjustable. Alarm function with snooze. - Adjustable brightness: Auto brightness option plus three manual brightness settings to suit different environments. - Practical and compatible: Quick time setup via power connection, reliable alarm, and clear readouts suitable for bedrooms, home offices, or dorm rooms. 2-3 use scenarios - Bedroom bedside clock: reliable alarm with automatic time setting for accurate wake-up times. - Home office desk: convenient date and temperature display while you work, with easy-to-read 12/24 hour display. - Dorm or studio setup: compact footprint, light weight, and flexible brightness for comfortable day and night use.