Specification Dimension & Weight 100 x 30.5 x 18 mm, 32 g (include batteries) Power Source One 3V CR2032 lithium battery Displayed temperature range Forehead: 32°C to 43°C (89.6°F to 109.4°F) Object: 0°C to 100°C (32°F to 199.9°F) Display resolution 0.1 °F/0.1°C Accuracy FOR BODY MODE: ±0.2°C (±0.36°F) from 36.0°C (96.8°F) to 39.0°C (102.2°F) ±0.3°C (±0.54°F) from 32.0°C (89.6°F) to 35.9°C (96.6°F) and from 39.1°C (102.4°F) to 43.0°C ( 109.4°F) FOR OBJECT MODE ± 1°C (±2°F) from 0°C (32°F) to 100°C (212°F) Temperature unit °C or °F Operating temperature range 16°C to 40°C (60.8°F to 104°F) Operating humidity 95% RH or less Storage temperature range -20°C to 50°C (-4°F to 122°F) Storage humidity 95% RH or less Memory capacity 20 measurements