Item model number: ‎SW-002A Weight: ‎215 g Product Dimensions: ‎12 x 2.5 x 12 cm; 215 g Batteries: ‎3 AAA batteries required. Style: ‎Modern Material: ‎Acrylonitrile Butadiene Styrene (ABS) Shape: ‎Square Power Source: ‎Battery Powered Accuracy: ‎+/-1°C Special Features: ‎Wireless, Portable, Large Display, Alarm, Clock Specific Uses: ‎Temperature, Precipitation, Humidity Included: ‎User Manual Batteries Included?: ‎No Batteries Required?: ‎Yes Dual Power Option Wall Mountable All-in-One LED Weather Station with Alarm Clock and Wireless Outdoor Sensor The base unit is wall-mountable and can be powered via AAA batteries or with the included USB cable (adapter required). Uses data from the base unit and the outdoor sensor to display relative humidity, indoor and outdoor highest/lowest temperatures. Built-in alarm clock makes it a perfect desk or bedside clock and ideal for seeing what you're waking up to! The base unit measures approximately 12 cm x 12 cm x 2.5 cm. Requires 5 x AAA batteries between the base unit and the sensor.