Features: With all the basic functions of weather clock, there are also perpetual calendar, clock function, and the time is in 12-hour or 24-hour system. The product has a weather forecast function, which can predict the climate change in the 12 hours. 4 weather forecast patterns are displayed: sunny, cloudy, cloudy and Backlight function, the backlight is long-lasting when powered by external power supply, with 4 optional brightness levels ------ bright-medium-dark-off; 15 seconds per trigger light when battery powered Note: The weather clock can be usb plugged in and used or powered by 2xAAA batteries(product does not contain batteries), the sensor needs to be powered by 2xAA batteries (product does not contain batteries) size: 15.2 x 6.1 x 9.6cm Material: plastic colour: white black Package Contents: 1 x Weather clock (2xAAA batteries not included) 1 x USB power cable 1 x Sensor (Need 2xAA batteries not included) 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 picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.