Features 1、Made of high quality material, this pH meter is not easily damaged, reliable, sturdy and durable. 2、Portable PH meter, the measurement range is 0.00~14.00PH with ±0.1PH accuracy. 3、Waterproof and drop‑proof PH testing pen, compact, lightweight, and easy to carry around. 4、Easy 1‑point manual calibration and built‑in stainless steel probe for more accurate measurement. 5、Wide range of applications, suitable for aquarium, aquaculture, swimming pool, spa, school laboratory, chemical, etc. Specification Condition: 100% Brand New Item Type: PH Meter Material: ABS Measuring Range: 0.00~14.00PH Resolution: 0.01PH Accuracy: ±0.1PH Power Supply: 4 x 1.5V AG13 Button Battery (Not Included) Automatic Temperature Compensation: 0℃~50℃ Working Temperature: 0℃~50℃; RH<95% Product Size: Approx. 17.5 x 4 x 2 cm / 6.9 x 1.6 x 0.8 in Weight: Approx. 122g / 4.3oz Package List 1 x PH Meter 1 x Screwdriver 1 x Instruction Manual