Case / bezel material: Resin Thermometer Measuring range: -19.9 to 49.9 °C (-3.8 to 121.8 °F) Measuring unit: 0.1°C Temperature sensor precision: ±2 °C (±4 °F) in range of 0 to 40 °C (32 to 104 °F) *Changeover between Celsius (°C) and Fahrenheit (°F) Full auto-calendar (to year 2099) 12/24-hour format Accuracy: ±60 seconds per month Approx. battery life: 12 months on R6P X 2