pH Tester -Water,Digital pH Meter, Pool,Fish Tank, Hydroponics, Education.3 x pH Buffer Powders, Automatic Calibration,Range 0.00-14.00 pH,ATC,Auto-shut off.Greeting card .Green. Wide Use: Ideal For Household Or Education Use; Amazing For Tester pH Level Of Drinking Water,Brewing Beer, Pool,Aquarium,Wine,RO system, Spa, Hydroponics And More Secret of Simple Easy Use: Just Press An On CAL Button For Automatic Calibration .This Digital pH Meter Has Pen Style Design. Large LCD Screen Easy To Read Calibration: Two Points Automatic Calibration With pH Buffer Solution Powders Helps You Test Liquid pH Within Seconds. Specification: pH 0-14 Measurements And 0.05 pH Range Of Error,Operating Temperature 32F--176F You Get: 1xGAONLY pH Tester , 1x Instruction Manual, 2x 1.5V LR44(built- in) ,3x pH Buffer Powders(pH6.86,pH9.18,pH4),greeting card "GAONLY"