With the highly sensitive pH/temperature double probe, you can quickly read the results. Digital pH tester with stable reading. More chips and probes for more stable readings, twice as many as other products, no worries about readings going all over the place. Smart pH Meter - With two-point automatic calibration of 4.00, 6.86, it is easy to calibrate; With automatic temperature compensation of 32.0-122.0, it avoids measurement inaccuracies caused by liquid temperature changes; With automatic shut-down, battery life is well preserved. Up to 1500 hours of continuous operation, powered by 2 AAA batteries. Material: plastic Color: as shown Package Contents: 1 x pH Tester Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.