Display with time, date and temperature alternately displayed manually adjustable. Available formats: 12/24 hours or Celsius/Fahrenheit, built-in battery to maintain settings in case of power failure. Power Supply: Built-in rechargeable lithium battery for a WiFi display 5V-500mA AC/DC UK, EU or US power supply for socket included. Battery life: 5-7 days with continuous display and 2-3 months. With active dispaly only for sound. Charging time: 3-4 hours. LED display colour: white. Product material: aluminium. Dimensions: 15 x 4.5 x 10 cm. Weight: 400 g