Features:_x000D_ _x000D_ With a Large LCD screen: easy to read the temperature at a glance. _x000D_ Very precise: this thermometer is accurate enough to create readings within 0.1 degree. _x000D_ No sensor cable needed, simply attaches to the interior of your aquarium with the suction cup. _x000D_ High and low temperature automatic alarm: default high temperature 28, low temperature of 18. _x000D_ Wireless with integrated probe and waterproof design, perfect for fish tank or other place. _x000D_ _x000D_ Specification:_x000D_ Type: DC16_x000D_ Weight: Approx.34g/ 1.2oz_x000D_ Size: Approx.52 * 32 * 20mm/ 2 * 1.3 * 0.8in_x000D_ Accuracy: 0.1_x000D_ Temperature Range: 0-37/32-99_x000D_ Battery: 1.5V AG13 * 1 (Not Included)_x000D_ _x000D_ Package List:_x000D_ 1 * Digital Thermometer_x000D_ _x000D_ Note:_x000D_ Please allow slight error due to manual measurement. Thanks for your understanding.