Range:32.0℃~42.9℃(90.0°F~109.9°F) Waterproof:Yes Fever beeper:Yes ℃/°F switchable:Yes Tip:Hard Accuracy ±0.1℃ during 35.5℃-42.0℃(±0.2°F, 95.9°F-107.6°F) ±0.2℃ below 35.5℃ or over 42.0℃ (±0.4°F below 95.9°F or over 107.6°F)