Features:
Water heater:
Easy to use, Safe, Precise.
Fully submersible heaters work in any position (horizontal or vertical) to provide optimum aquarium water temperature.
Safe and reliable in both fresh and salt water aquariums!
Temperature range between 65°F and 93°F.
Sensitive and reliable thermostat maintains uniform temperature
Includes two suction cups for mounting
Automatic shut off when the temperature is reached.
Shatterproof glass
Plastic cover protector (removable)

Specification:
Colour: black
Voltage: 220~240 50-60Hz
Type: 25W,50W, 100W, 200W, 300W

50W 100W
Diameter: 2.2cm/0.866 inch
Length of power cord: 82cm/2.69 feet
Heater Length: 18.5cm/7.28 inch(50W), 21.3cm/8.38 inch(100W)
Recommended Tank Size: 1 to 15 gallon(25W),10 to 16 gallon(50W), 20 to 33 gallon(100W)

200W, 300W
Length of power cord: 83 mm
200W Length :280mm / 9.2inch
300W Length :330mm / 12.6inch
Temperature measurement range: -50 degree~ + 70 degree
Usage temperature: -10 degree ~ +50 degree
Usage humidity: 5%2525 ~ 80%2525
Accuracy:-/+ 1 degree
Distinguishing temperature: 0.1 degree

Package Included:
1 x Digital Thermometers (US plug)
1x POWER PLUG Adapter(According your Country)