ITEM NAME:6-12V R385 DC Diaphragm Pump Aquarium Fish Tank Water Air Pumps B7M6 Pump size: 90mm * 40mm * 35mm Outlet diameter: inner diameter 6 mm, outer diameter 9 mm Working voltage: DC6-12V (recommended 9V1A 12V1A) Working current: 0.5-0.7A Flow: 1.5-2L / Min (left and right) Maximum suction: 2 meters Head: up to 3 meters Life: up to 2500H Water temperature: up to 80 When the voltage is 6V: the power is 6W / H Note: The silicone sleeve is fixed on the back of the water pump. Do not cover the heat dissipation hole of the motor. Move it back a little to avoid affecting the heat dissipation and service life!.Note: The silicone sleeve is fixed on the back of the water pump. Do not cover the heat dissipation hole of the motor. Move it back a little to avoid affecting the heat dissipation and service life!