COMPLETE - This weather station tells you the time, date and day of the week and has an alarm and snooze function. It works on mains power (USB cable included) or on batteries (not included). It is also equipped with "sound control" technology (can be deactivated) which allows, when using batteries, to turn it back on at the slightest noise or vibration. SIMPLE - The colored pictograms allow you to know the weather trends. As well as temperature trends over the last 12 hours. MEASUREMENT - This weather station provides you with all the information you need: Ambient temperature + Min/Max data, Ambient humidity level + Min/Max data. PRACTICAL - its adjustment buttons on the front panel prevent risky handling at on the back like on many weather stations! Specification: Material: ABS Power supply: Mains (USB cable included) or 2 AAA batteries (not included) Dimensions: 14 x 10 x 2 cm - CE and RoHS certified