Best gift for family, friend and children. Extra Indoor temperature and humidity function will be displayed clearly displayed in either deg C or deg F. These additional features will help you make a decision on daily dressing. Dimensions and Power Supply: about 12.5cm * 4cm * 12.5cm; 2x AA batteries (not included). Battery operated is good for conveniently placing the alarm clock anywhere in your home, such as bedroom, bed, kitchen or living room. If you have any questions about this product, please contact us. If you have any questions, please contact us in time and we will resolve them as soon as possible.