This USB rechargeable soil NPK tester accurately measures potassium levels with an error margin of less than ±5%, enabling users to optimize fertilization strategies and boosting crop yields efficiently With its built in high sensitivity sensors, this soil NPK tester delivers consistent accuracy for scientific research and agricultural management, providing essential data to enhances soil health and productivity Ideal for home gardening, small farms, outdoor activity, and travel, this portable soil analyzers maintains high sensitivity across various soil types, ensuring reliability in environments Designed for gardening enthusiasts, professional farmers, beginners, this soil nutrient detector reduces learning curves with its user friendly interfaces, making it accessible for all skill levels in agricultural setting Featuring a ABS body and a USB rechargeable battery that provides up to 8hours of continuous use after a 1hour charging, this portable soil analyzers quick results within 10seconds through simple button operate, Manufacturer: WangWeN