Certification: CE,FCC,RoHS Origin: Mainland China Power Type: Battery-Powered Size: 112*50*25mm Brand Name: SNDWAY Model Number: SW-DS50/SW-DS70/SW-DS100/SW-DS120 Measurement Accuracy: ±3mm GS series/±2mm DS series Data store/ recall: 30 units Battery: 2x1.5V AAA (not included) Self-Calibration: ±9mm Memory Function: Painter function