1. Pen type digital pH meter, all in one 2. Water proof 3 ... . LCD indicates both pH & temp. all in one pen type low cost ph meter FEATURES: 1. 0.00 to 14 ... pH.8. LCD indicates both pH & temp.2. Pen type digital pH meter, all in one, pH electrode included, easy ... (electrode included).WARRANTY:One year after purchase. For electrode: half year.PICTURES:A. Buffer PowerB. Package all in one pen type low cost ...