Electronic heater with high precision and accuracy of operation Easy to set temperature at the top of heater within the range of 20°C to 32°C 3-stage status LED for temperature control Integrated microprocessor ensures high reliability Safety features: extra safety shut off, thick heat and shock-resistant borosilicate glass tube and plastic cap for bump protection 1,6 m long power cord for convenient placement of heater inside of the aquarium Securely attached by two adhesive suckers 2 years of guarantee