Radio controlled clock TIME-ON 81 Dimensions L x W x H: 107 x 93 mm Dimensions W x H x D: 107 x 93 x 90 mm Indoor relative humidity range: 20...90 % Internal temperature range: -9.9...60 °C Included in delivery: Batteries included Batteries: 4 x AA Functions: Radio Clock / Temperature Indoors / Humidity Indoors