SpecificationProduct Name: LI1 laser angle casterProduct Size: 120*20*35mmLaser Wavelength: 660nmLaser Class: Class IIIndoor Distance: 10mHorizontal Accuracy: 1mm/5mVertical Accuracy: 1mm/5mWorking Temperature: -10C~50CStorage Temperature: 20C~55CBattery Specification: 730mAh rechargeable lithium batteryWorking Mode: absolute angle + relative angleFeature1. High-brightness LED, can be seen clearly at long distances2. Anti-drop metal material, durable3. Accurate measurement, easy to use, convenient for work and life4. Large battery capacity, long battery lifeNote:1.Please allow 2-3mm differences due to manual measurement.Package Include 1 x 1 Laser + Holder (Not including other things)OR 1 x 3 Laser + Holder (Not including other things)