KL-03(III)Waterproof Pen-type pH Meter *Large and easy-to-read LCD *Replaceable pH electrode *Waterproof design *Data hold Technical Specification： Measuring range:0.00~14.00PH Accuracy:+/-0.1PH Resolution:0.01PH Operating Temperature:0℃~50℃ Automatic Temperature Compensation:0℃~50℃ Power Supply:4x1.5V(AG13) Dimensions:188x35x35(mm3)