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 Ò 0.2¯F (95.9¯F ~ 107.6¯F) / Ò 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 *