Description: PH-991 Portable PH Meter Aquarium Swimming Pool Acidimeter Analyzer Water Quality pH &Temp Monitor Specification: Range: pH 0.00 ~ 14.00 TEMP: -50 C ~ 70 C (-58 F ~ 158 F) Resolution: pH 0.01 TEMP: 0.1 C (0.2 F) Accuracy: pH ± 0.1 TEMP: ±1.0 C (±2.0 F) Temperature Compensation: 0 C ~ 50 C (32 F ~ 122 F) Environmental temperature: 0 C ~ 50 C (32 F~ 122 C) Power supply: DC 6V (Power Adapter Usable) Battery: 4 ×1.5V AG-13 Button Cell Batteries (NOT Included!!) Color: Yellow Material: ABS Length of Temperature Sensore: Approx. 90.5cm \/ 35.6in Length of pH Electrode: Approx. 119cm \/ 46.8in Item Size: Approx. 7.5 x 6.7 x 2.5cm \/ 2.9 x 2.6 x 1.0in (Excluding Temperature Sensore) Item Weight: Approx. 57.9g \/ 2.0oz (pH & TEMP Meter Body) Package Size: Approx. 21 x 10.4 x 5cm \/ 8.3 x 4.1 x 1.9in Package Weight: Approx. 299g \/ 10.5oz Package includes: 1 x PH-991 Portable PH Meter Details pictures: