SNDWAY Laser Range Finder 60/50/40m Portable USB Charger High Precision Measurement Angle Laser Digital RangeFinder Construction Tools Features: Max measure range: 40/50/60M Measuring accuracy: 2mm Single /continuous measurement, area/volume measurement, Wall quickly measurement, Indirect Pythagorean theorem measurements. Min./max./value Auto calibration function 3.7V 850mAh lithium battery,Full power work 8000 times. Segmented LCD About Shipment We need 1-3 days to arrange the shipment ,the items will be shipped by Standard Shipping Registered Air Mail.Under normal circumstances, reach most of the countries need 15-40 work days,delivery time depends on destination and other factors. It may take up to 15-40 work days, according to the different Customs policy of every country and region .If an generated tariffs and import duties, by the buyer bear payment. If your addre undeliverable to shipped .If the return addre error caused by the merchandise we need to charge for shipping. Size & Color Manual measurement ,there are 0.1-0.5 mm error,please understand If you have any concerns questions, please contact customer service before buying.Because the display and lighting color may be a slight deviation,the product color in kind prevail, pictures for reference only. Return&Refund 1. If the items are found in bad condition after received, please contact us. We can arrange the refund or resend to you.2. If you are not satisfied with the product due to personal preference, you can return it to us within 7 days. However, the additional shipping freight should be afforded by yourself. About feedback 1. If the items are found in bad condition after received, please contact us. We can arrange the refund or resend to you.2. If you are not satisfied with the product due to personal preference, you can return it to us within 7 days. However, the additional shipping freight should be afforded by yourself.