CITIZEN Digital Electronic Thermometer CT422 Waterproof Antibacterial Actual Measurement Type Antibacterial and waterproof specifications that can be washed with water and kept clean at all times. It also has a memory function to store measurement results and a buzzer function to notify the end of measurement. Can be used in the armpit or mouth. [Brand] CITIZEN [Model Number] CT422 [Functions] Antibacterial, Waterproof, Memory Function, Buzzer [Measurement Site] Armpit, Mouth [Accuracy] ±0.1℃ [Power Supply] LR41 (Battery replaceable) *Operation confirmed, batteries are not included, so please prepare them(^^) They are also available at 100-yen shops!