2 in 1 Alarm Clock & Indoor Thermometer - Not only an alarm clock, but also a Indoor Thermometer. Upside down the alarm clock, it will show the temperature instead of time. Just like a companion to protect your health. °C/°F mode can be switched freely, allow you to keep abreast of changes in indoor temperature, which is convenient and easy for kids, teens, and elders to use. Extreme Accuracy - As digital clock, the time accuracy is ±30 seconds per month; as indoor thermometer, temperature accuracy is ± 0.1°C. The sensor of temperature is made in the USA and it measures temperature gauge to provide updated and accurate readings every 20s. Adjustable Brightness - Press the TIME SET button for 2 second and change the 3-level brightness, low/ middle/ high. The clock will dim and be on night-mode automatically during 8:00pm-6:00am. No blinding lights or any annoying sounds disturb your sleep, create an peaceful and comfortable environment for sleep. Battery Operated Alarm Clock - I