If you are looking for an aquarium water temperature measuring tool with reliable and reasonable price, I will tell you that our product will be your . It adopts good and high-grade material, can keep it for a long time. Features - Color: Black - Material: ABS, LCD - Size: About 11.80X3.00X2.85cm/4.64X1.18X1.12inch - Time display range: 1∶00-12∶59 - Temperature range: -50 degree centigrade (-58°F) ~ +70 degree centigrade (158°F) - Accuracy: ±1 degree centigrade - Resolution: &gt; -20 degree centigrade for 0.1 degree centigrade <=-20 degree centigrade for 1.0 degree centigrade - Power: .5V 7#alkaline battery(Not Included) - With high-definition digital display screen, give you a different visual experience. - It is compact and practical, and won't take up too much space. - Simple and practical design, easy to operate and use, suitable for home use. - It is made of good material, fine workmanship ensure the practicality and durability. - High durability and not easy to deform. Fine workmanship and good texture ensure practicality. Package list: 1 x Temperature clock display 1 x Thermal Detector 1 x Specification