HTC-1 Digital Clock Thermometer Hygrometer Alarm Clock Calendar with LCD Display Specifications: Temperature range : -50°C~+70°C (-58°F~+158°F) Temperature accuracy : ±1°C (1.8°F) Temperature resolution : 0.1°C (0.2°F) Weight 111g Humidity range : 10%~99% RH Humidity accuracy : ±5% RH Humidity resolution : 1% RH ORIGIN : GABY INSTRUMENTS