SNDWAY Laser distance meter Laser rangefinder multi function Self-Locking Hand Tool Device Laser range finder Specification Brand Name:SNDWAY Origin:CN(Origin) Size:85.379.358.8mm Model Number:SW-TM40 SW-TM60 Measurement Accuracy:+/-2mm Power Type:Battery-Powered Laser Level:Class II Unit Selection:M feet inch Single / Continous measurement:Yes Length / Area / Volume measurement:Yes Usage:Measure the distance between two point Application:Home installation Buliding construction etc. Battery:1.5V 2AAA Storage Humidity:20%-80%RH Battery Life:8000times for single measurement Weight(Including Battery):90g Storage Temperature:-20-60 Automatic shutdown:150s