Measure range:0.00-14.00 PH    

 Resolution:0.1PH 

 Accuracy: +/-0.1PH(at 20 °c)   

 Battery: 3*1.5V( button cell)

 Operating temperature: 0-50°C (32-122°F)

Service life :approx. 150 hours of use

 Dimension:152*30*21mm(5.9*1.2*0.8'')

 Weight :50 g