?The pen pH meter is professional and ideal tool for testing pH of your water level. Suitable for aquarium pool and environment water. <br> <br> <strong>Features:</strong> <br> Use to measure the pH level of solution. <br> The tendency of the solution to either gain or lose electrons. <br> Clear LCD with backlight. <br> Apply in water sources£¬ aquarium£¬ hydroponics£¬ spas£¬ swimming pools and other water systems. <br> Mini small size£¬ easy to carry with. <br> Compact and portable pen-type design. <br> Easy to use and provides instant display of results. <br> <br> <strong>Specifications:</strong> <br> Range: 0.00 ¡« 14.00pH <br> Resolution: 0.01pH <br> Accuracy: ¡À0.1pH ? <br> Operating Temperature: ?0¡æ ¡« 50¡æ (32¡ãF ¡« 122¡ãF) <br> Temperature Compensation: 0¡ãC ¡« 50¡ãC (32¡ãF ¡« 122¡ãF) <br> Battery: 2 ¡Á 3V£¨CR1632) Button Cell Battery (not included) <br> Color: Pink <br> Material: ABS <br> Item Size: 14.8 * 2.6 * 1.4cm / 5.8 * 1.0 * 0.6in <br> Item Weight: 37.4g / 1.3oz <br> Package Size: 17.8 * 7 * 3m / 7 * 2.8 * 1.2in <br> Package Weight: 94g / 3.3oz <br> <br> <strong>Package List:</strong> <br> 1 * pH Meter (Battery is not included) <br> 1 * User Manual <br> 1 * Mini Screwdriver