Waterproof Infrared 17x20x86mm A&D Thermometer, Gray, AD-5617WP,

Size: Width 1.8cm x Depth 8.2cm x Height 1.8cm Weight: Approximately 21g (including battery) Materials/Materials: ABS, etc. Power source: 2 x LR44 button batteries Battery life: Approximately 30 hours (continuous use)