The compact lightweight device is durable waterproof and features an easy-to-read display * For Oral Rectal or Under Arm Use * Large Digital Display * Last Memory Recall * Beeps when ready * Measuring Range 90�F ~ 109.9�F * Accuracy � 0.2�F (95.9�F ~ 107.6�F) / � 0.4�F (< 95.9�F or > 107.6�F) * Power Supply: One Button Battery: 1.5V LR41 AG3 or equivalent * Weight / Dimensions~12 g / 12.2 cm x 1.9 cm x 1 cm * Ambient Operating Temperature: 60.8�F ~ 104�F *