Product Feature - This item is a New PH TEST Meter.- Range: 0.0 - 14.0pH- Resolution: 0.1pH- Accuracy: ?�� 0.1pH( at 20??C/ 68??F)- Typical EMC DEV: ?�� 0.2pH- Batteries: 3 x 1.5V ( AG-13 Button Battery)-Life: approx. 700hours of use-Function: Test the PH of water， wine and Urine.- Environment: 0??C ~ 50??C( 32??F - 122??F)- Relative Humidity: lt;95??%- Dimensions: 150mm x 29mm x 16mmPackage Include:1x Digital PH meter 1x Calibration Adjustment screwdriver 1x User instruction (English) 2x pH buffer powder