Digital Clock Temperature Humidity Thermometer Desktop Compact This small digital clock also displays humidity and temperature. It's convenient because you can see the time, temperature, and humidity at a glance. A magnet is attached to the back, so you can stick it on the refrigerator, etc. Batteries are included, so you can use it immediately upon arrival. Here's a brief explanation, as the instructions are in English: The set button switches between time and alarm. Press and hold the set button (for about 2 seconds) to set the time. Use up and down to adjust. Press the set button to confirm. To activate the alarm, go to the alarm screen and press the up button. If the bell icon appears in the upper left corner, the alarm will sound. If there is no bell icon, it will not sound.