This advanced Dissolved Oxygen Meter is crafted from plastic and is presented in the color as shown in the picture. It is designed to accurately measure oxygen concentration, dissolved oxygen saturation, and temperature in various aquatic environments. The package includes one dissolved oxygen meter, one electrode, one 30mL electrode filling solution, and six replaceable electrode heads, ensuring comprehensive readiness for immediate use., Weight: 0.81681268071 pounds, Manufacturer: Prterver