- Voltage: 3.5-12V, head: 40-160cm. the maximum flow: 300L/H. 60 degrees below temperature resistant. - Continuous working life (24 hours non-stop work) more than 20000 hours, about 10 hours per day, water pump life for 8 years. - The inlet and outlet diameter is 8.3MM, the inner diameter 6.2MM. With 2 soft sucker, can be fixe freely. - Super mute, noise figure is 30dB.