1. Measuring range: 4*90° 2. Resolution: 0.05° 3.Accuracy: +0.2° 4. Repeatability: 0.1° 5. Power supply: 3.7V lithium battery 6. Working temperature: -10 to 50℃ 7. Magnetized bottom makes various stick-on measurements simple and accurate; 8. Absolute zero measurement based on the level ; Colour:black Material:plastic Size:35 x 35 x 20mm Package Contents: 1 x Digital Angle Gauge Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.