Feature 1、Unique voice‑activated wake‑up: When the backlight is turned off, and the sound exceeds 90 decibels within 1m/3.3ft, the backlight will be activated for ten seconds. 2、Monitor temperature and humidity changes, understand temperature conditions, support conversion between Celsius and Fahrenheit, suitable for family living room, bedroom use. 3、With large digital display and backlight, it is easy to browse and read even in dim light. 4、Dual power supply, it can be plugged into a power supply or used with a battery(battery not include). After power is plugged in, the backlight will always be on. 5、Displays the day of the week, date and time, support lunar phase display, 12/24 hour time display, low battery display. 6、The alarm clock has the function of greedy sleeping. It is suitable for heavy sleepers and can set the sleeping time arbitrarily. 7、Multiple weather forecasts can be detected: sunny, half sunny, cloudy, rainy. Condition: Item Type: Alarm Clock Material: ABS Color: Wood Color Size: Approx. 21.5x16x2cm / 8.5x6.3x0.8in Weight: Approx.680g/24oz Host Battery: 3 x AAA battery(Not included) Outdoor Unit: 2 x AAA battery(Not included) Indoor Temperature: 0~50°C (32~122°F) Outdoor Temperature: -40~70°C Temperature Resolution: ±1°C Indoor/Outdoor Humidity: 20~99%RH Weather Forecast: Sunny, half sunny, cloudy, rainy. Alarm Clock: With alarm clock and snooze function. Package List 1 x Alarm Clock (Battery Not Included) 1 x Outdoor Unit(Battery Not Included) 1 x Power Line 1 x English Manual Note 1. Please allow 1‑2cm error due to manual measurement. Thanks for your understanding. 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.