"Great device for monitoring the 'weather’ inside your house or office. Temperature and humidity display on a nice big clear digital and graphic screen. Programmable ideal 'comfort level’ indicator. Time and date plus alarm function. Display backlit for any-hour viewing. Powered by 2 x 'AAA’ batteries (not supplied). Dimensions: 80mmW x 135mmH x 20mmT. Nice modern style in brushed silver. Quality instrument made in Germany."