Quantity 1 piece(s) Material ABS Color Black Function Temperature display / humidity display Screen Size 2.0" Display Color Black Power Supply 1 x AG13 battery or 1 x LR44 battery (included) Temperature Range -10'C~50'C Humidity Range 20%~95% RH Other Features Accuracy: Temperature: +/- 1%; Humidity: 5%; Resolution: 0.1'C 1% RH; High quality electronic temperature-sensing element; LCD digital displays temperature and humidity sensitive clear and quickly; Widely use for car and indoor also can be used in refrigerator refrigeratory factory mine put it in your cigar case you will know the correct temperature and humidity to protect your cigar Packing List 1 x Thermometer / hygrometer (1 x LR44 battery included) 1 x English user manual