Specifications Temperature Range -27.4°F to +428°F -33°C to +220°C Accuracy +2% Dimensions 18 x 37 x 68mm (0.7 x 1.5 x 2.7") Weight 32 grams (1.13 ounce) with battery Battery CR2032 Battery Life 40 hours continuous use (auto off after 15 seconds) Protect your high dollar investments. This is a "must have" for Li-Poly's and Brushless Motors.