Item Type: Aquarium Thermometer <br>Material: PC, ABS <br>Thermometer Diameter: Approx. 4.6cm/1.8in <br>Battery Type: 1 x LR54 Button Battery (Shipped with Matching Battery) <br>Battery Capacity: 70mAh <br>Waterproof Level: IP68 <br>Fixing Method: Silicone Suction Cup<br>1、[LCD Display] This aquarium thermometer has a large digital LCD screen with a simple, large display for clear and more intuitive data reading. You can know the temperature of your aquarium easily. <br>2、[IP68 Waterproof] Exterior of the aquarium thermometer is made of PC and ABS with airtight technology, IP68 waterproof, so you don't have to worry about using it in water. <br>3、[High Accuracy] This digital fish tank thermometer can be accurate to 0.1℃ change. Ideal for real time monitoring of aquarium or indoor temperature changes. <br>4、[Wide Range] Digital aquarium thermometer offers a temperature measurement range of 1 to 45℃ to meet the needs of different places, more convenient than just for use in aquariums. <br>5、[Suction Cup Fixing] Submersible fish tank thermometer with transparent silicone suction cup fixing, with strong suction and unique shape, can be fixed on the tank or glass wall.1. To install or replace the battery, use a coin to unscrew the back cover, and the back cover must be screwed tightly after installation to prevent damage caused by water in. <br>2. Manual measurement, please allow some errors.<p>1 x LR54 Button Battery</p>1 x&nbsp;Aquarium Thermometer<p>1 x Coin&nbsp;&nbsp;<br></p>