Item Type: PH Meter Material: ABS Color: As shown in the picture Size: Approx.155x32mm/6.1x1.26in Calibration Method: 3-point automatic calibration Resolution: 0.01PH Battery: 2x1.5V (LR44 button battery) (not included) Range: -2.00-16.00PH (usually 0.00-14.00PH) Temperature Range: 0-80oC Weight: Approx.110g/3.9oz Reset Function: In the power-on state, press and hold the power button for 3 seconds, and then release it. When the screen appears: "----" Reset is successful. Automatic Temperature Compensation Function: 0-80oC power failure data storage function: the data will be automatically saved after the battery is removed, and the storage time will be one month. Test Strip Function: The color of the backlight will change with the PH value, like litmus paper. 1Super clear digital display provides you with clear data display at the fastest speedat a glance. 2Adopts high quality ABS material, durable in use. It has automatic temperature compensation function. 3Sensitive electrode sensors, high sensitivity, fast and accurate ph and temperature measurement. 4Widely used in household water, fish tanks, swimming pools, laboratories, farmland irrigation, and sewage treatment. 5The compact design and lightweight make it easy for you to use the pH meter wherever you need it.1. Please allow 1?2in error due to manual measurement. Thanks for your understanding. 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard. 1 x PH Meter(Battery Not Included) 1 x Instruction Manual