Specification: Product Size: 9cm x 9cm x 5cm /3.55 inch x 3.55 inch x 1.97 inch LCD Display Size : 6.2 cm x 6.2 cm / 2.44 inch x 2.44 inch Product Net Weight: 130 g Temperature Measurement Range: -10 50 / 14F122F Temperature resolution: 0.1 / 0.1 F Temperature Accuracy: +/- 1 Humidity Measurement Range: 20% to 95% Humidity Accuracy: +/- 5% Humidity resolution : 1 % Data Reporting: Temperature 30second updates / Humidity 30 second updates Battery: 2pcs AAA batteries (not included) Features: On Demand White Backlight The clock features a built-in white backlight to illuminate the screen when snooze/light button is pressed. This alarm clock has an ascending alarm Before the alarm stops itself, top mounted snooze button can be pressed for extra sleep time features an easy to read clear display, easy for kids, teens to use, basic bedroom bedside table desk gift alarm clock. It is an easy cordless battery operated alarm clock, powered by 2 - AAA batteries (not provided) Easy to Use anywhere you need a clock Easy set top button controls for simple operation. Battery operated (no cords) allows it to be used anywhere you need a clock Indoor room temperature and humidity can have a significant impact on personal comfort, health, safety and the condition of valuables in your home. Humidity levels that are too high can lead to an increase in home pollutants, such as mold, bacteria, viruses, fungi, and dust mites. Humidity levels that are too low in your home can cause nosebleeds, skin irritation, difficulty breathing and static electricity. you can easily monitor the temperature and humidity of your home with this alarm clock so you are aware of whether environmental adjustments are needed to protect your family and possessions. The monitor features professional humidity and temperature sensors to provide accurate measurements and fast data reporting at an affordable price. Powered by 2pcs AAA battery (not included)