The Westclox LCD Dual Alarm Clock with Wireless Outdoor Temperature Sensor 70034A has a large, easy-to-read LCD display with a touch-activated blue backlight that stays on for 5 seconds so you can see what time it is at night, without having an annoying glow all night long. Shows time, day of the week, date, alarm time, indoor temperature, and outdoor temperature. Outdoor sensor is water and weather resistant and wall-mountable. Collapsible back stand for compact storage or travel. Clock uses 3AA batteries, outdoor sensor uses 2AA batteries, not included. Dimensions:5.5"L x 3.75"H x 1"D when collapsed/ 1.77"D with stand open.