Waterlux 3-in-1 TDS, Temperature, and EC Meter with large LCD Screen Professional, Accurate, and Precise 3-in-1 TDS, EC, and Water Temperature Meter Includes Stylish Leather Carrying/Storage Case Large LCD Display Screen includes simultaneous temperature reading and Automatic Temp Compensation Quick, Easy, User-Friendly, Lightweight, Portable Design 5-Minute Auto Shut Off Feature for ultimate battery life and Lock Function for easy readings