This is a kind of quality clock, LCD display, clearly display the time, calendar, week, temperature, humidity, and etc.. Selected high accuracy temperature and humidity sensors, let you knew the weather situation clearly. You can have a try. Features: Measuring indoor and outdoor temperature and humidity, Celsius and Fahrenheit conversion. The screen size is so large that even the elderly can see the times. Display the temperature so you can sense it without looking at the weather forecast. When the battery is low, there is an icon to show, so that you can charges it in times. With alarm function, you don't have to worry about oversleeping. Specifications: Product model: MY-13 Indoor and outdoor stability measurement range: -10~65 Temperature measurement accuracy: 1 Temperature resolution: 0.1 Humidity measurement range: 10%RH~99%RH Humidity measurement accuracy: 5%RH Humidity Resolution :1% Resolution :1% Temperature/humidity measurement period: 2 seconds Display mode: LCD display Operating voltage: 3.7V Power supplys battery: 300mAh Item size: 125 * 77 * 16mm / 4.9 * 3.0 * 0.6in Item weight: 78g / 3.1ounce Package size: 160 * 90 * 20mm / 6.3 * 3.5 * 0.8in Package weight: 110g / 4.3ounce Packing List: 1 * Alarm Clock 1 * USB Cable 1 * English Manual