Product Description: Just sucker on the dashboard or windshield of a car; Also sucker on the mirror or glass table indoor at home. Product Specifications: Net Weight: 27 g. Size: 90 x 28 x 22 mm / 3.54 x 1.1 x 0.87 inch. Temperature range: -20°C ~ +110°C(-58°F ~ +158°C) Temperature display resolution: ±0.1°C Temperature measurement accuracy: ±2°C Power: 1.5V one size LR44 button battery cell (include) Package Contents: 1 x Thermometer.