The simple one-button for the thermometer makes the operation more elegant and refined. The temperature displays C and F can be switched at the touch of a button. The temperature measures: -50 C ~ 70 C (-58 F ~ 158 F), temperature accuracy: 0.5 C. Measures humidity: 10% RH ~ 99% RH. With a digital thermometer/hygrometer, you always have an overview of the room climate and can thus adapt it individually to your needs. The LCD display with and thick digits allows you to read temperature, humidity and time more and clearly. Powered by 1 x AAA (not included) Besides, a wall or desk will not take up space. You can hang indoor thermometer hygrometer as an ornament or place directly on the table and count on the support behind it. A room thermometer as a multifunctional device combined with thermometer, hygrometer, calendar and alarm clock. perfect as a room thermometer in the home, living room, kitchen, children's room, bedroom or wine cellar. Color: black Material: ABS Package Contents: 1 x alarm clock temperature hygrometer Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.