Size: 2.1 x 1.2 x 5.4 inches (53 x 31 x 138 mm); Material: Plastic Measurable Material: Wood 6%-44% (Beechwood Birch Cherry Oak Pine, etc.); Building Material 0.2%-2.0% 11.4-7.4% (Cement Screed Concrete Plaster) 20.0-4% - 4% % % - 4% 0.4-3 .7% (lime mortar) 50.0-8.5% (brick) Accuracy: 0.1% Temperature Error: ±1.5 Storage Temperature: -10-50 Usable Temperature Range: 040 Operating Humidity Range: 080% RH Weight: Approx. 3.2 oz (90 g) Power Supply: 1 x 9 V 6F2222 battery (not included) Automatic power supply batteries not included