Features: 1.Accuracy: High accuracy sensor is preferred, temperature difference range of detection point is only 0.1. 2.One Touch: LED digital display is bright when touched, just gently touch, you can know the real time temperature of the fish tank. 3.Long Lasting: This product requires a CR2032 button battery to use, low power consumption, once the battery can be used for 12 months. 4.Repeatedly Paste: Attached to the outer wall of the fish tank, the adhesive can be washed with water, paste without leaving a mark. 5.Convenient to Use: Screen is clear and easy to read, easy to install to the wall of the fish tank, easy to carry, small size and lightweight. Specification: ItemType: Aquarium Thermometer_x000D_ Material: ABS_x000D_ Size: Approx. 5.2x4.9cm / 2.0x1.9in _x000D_ Battery Type: Button Battery_x000D_ Capacity: 210 mA_x000D_ This Product Requires 1 CR2032 Button Battery to Use (shipped With Built In Battery)_x000D_ Temperature Range: 0~99.9_x000D_ Temperature Measurement Accuracy: 0.1 PackageList: 1 xAquarium Thermometer Note Manual measurement, there will be 0.1?0.2cm/0.04?0.1in error.