Waterproof Digital LCD Display Fish Tank Aquarium Thermometer Submersible with Suction Cup Temperature Meter Household Accessories Feature: Waterproof design, can be completely immersed in water. The suction cup can be adsorbed in the inner wall of the aquarium with a built-in sensor. Specification: Material: ABS Temperature measurement range: -50~70 Resolution 0.1C (-20C); 1C (other) Accuracy: 1 Power: 1 PCS DC1.5V (LR44) Instruction: 1. Unscrew the battery cover and put in a LR44 button battery, taking care not to reverse the polarity. It is displayed after power-on. 2. Tighten the battery cover, pay attention to the sealing ring should be placed correctly and not be damaged. 3. Please remove the battery if it will not be used for a long time. Note: 1. Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you 2. Please allow 1-3mm measuring deviation due to manual measurement. Size: as shown Shipping color: blue Quantity shipped: 1