Compact and Sturdy Design for Ornamental Fish Aquarium Designed with sound reduction & silent output Sealed internally with special coating to minimize sound output Comes with vibration-proof rubber leg that minimizes vibration noises on any surface GEX eAIR 1000SB Air discharge port: 1 port type Rated voltage / frequency : AC 100 V 50 Hz / 60 Hz Power consumption: 1.2 W (50 Hz) 1.1 W (60 Hz) Discharge amount (at no load): 0.8 L / minute Size - Body only: 52 x 43 x 92 mm (Approximately) GEX eAIR 2000SB Air discharge port: 1 port type Rated voltage / frequency : AC 100 V 50 Hz / 60 Hz Power consumption: 1.2 W (50 Hz) 1.1 W (60 Hz) Discharge amount (at no load): 0.5 - 1.5 L / minute (with air strength adjustment dial) Size - Body only: 75 X 55 x 126 mm (Approximately) GEX eAIR 4000SB Suitable for tanks with width 60cm or less and water depth of 40cm of less. Air discharge port: 2 port type Rated voltage / frequency : AC 100 V 50 Hz / 60 Hz Power consumption: 1.9 W (50 Hz) 1.7 W (60 Hz) Discharge amount (at no load): 0.5 - 2.0 L / minute (with air strength adjustment dial) Size - Body only: 110 x 77 x 170 mm (Approximately) GEX eAIR 6000SB Suitable for tanks with width 120cm or less and water depth of 50cm of less. Air discharge port: 2 port type Convenient for multiple aquariums. Rated voltage / frequency : AC 100 V 50 Hz / 60 Hz Power consumption: 2.7 W (50 Hz) 2.6 W (60 Hz) Discharge amount (at no load): (0.8 to 2.5) x 2 liter / minute Size - Body only: Width 9.8 × depth 6.5 × height 14.8 cm (Approximately) Kindly take note this is a Pre-order item. It will take approximately 3-5 working days to arrive after the order has been placed. Pre-order items are subject to supplier availability. If stocks run out, we’ll notify you for a refund or alternative. Thank you for your patience and understanding.