This set warranty is supported by our company and the spec is as follows:

Technical data

Measuring range  0.05-40m

Measuring Accuracy  +- 2mm

Laser type  635nm,<1 mw, class 2 

Measuring Frequency 0.3s

Smart Signal Compensation .

Protection Class  IP54 - Dust and splash water protected

Operation Temperture  0 degree to 40 degree

Storage temperture  -20 degree to 70 degree

Batt AAA, 2x1.5 up to 5000 measurements 

Dimension 110x43x23mm

Weight without batt 70 g 

Function 

Measure- area,volume and pythagoras

memory - 10 results

Display illumation 

switch off laser beams within 30s

switch off instruments with 3 mins inactivity