Characteristics Compact and Fashionable design Target at DIY users, easy to carry Multi-function ultrasonic range finder Enabling a comfortable and reliable griping It is accurate, stable, and durable Technology features Recommended use environment: Indoor Range: 0.5~18m Accuracy: +/-0.5%+/-1 Resolution: 0.01m Laser type: red 650nm Calculation range: Length Max display value: 9999.99m Area Max display value: 9999.99m2 Volume Max display value:9999.99m³ General description Display with back light and Beep Operating condition: 0~40C Storage condition: -10~60C Standby time:continuous work about 10 hours Power supply: 1*9V (6F22) Product size: 136X61X38mm Product Weight:142 (incl. Battery) Standard Accessories: gift box, manual, battery