Model HTC-2S Quantity 1 piece(s) per pack Color Black Material ABS + components Specification Humidity range: 20~99%RH Other Features Temperature range: 0~50'C (32~122'F); Humidity range: 20%~99%RH; Resolution: 1'C; Calendar: 2001~2099; Memorize max and min temperature and humidity values; 12/24 hour format; Shows weather; Size: 139 x 75 x 20mm; Difference: temperature: +/-1'C humidity: +/-5%; Operation: short press mode key can check alarm clock press mode key again can check calendar; Time set: press mode key for 3s when the hour number is flashing press up / down key to set time; press mode key again to set minutes; Alarm clock set: short press mode key then the same as time set; Calendar set: short press mode twice then press mode for 3s to set calendar then the same as time set; Alarm clock on/off: short press up key; Max/min value: short press max/min key to read max value press again to read min value; 12/24 hour format: press up key for 3s to shift 12/24 hour format Packing List 1 x Thermometer 2 x AAA batteries 1 x Holder 1 x Chinese user manual