Feature:

• DC voltage, wave makers
  are driven by either DC12V or DC24V, which is rated for human and fish-safe. sine wave technology, super quiet <20dB

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• Super compact and
  powerful. The size is barely 1.5" long. You can easily hide the wave maker
  anywhere in the tank without being seen.

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• New patented stator
  design, it pushes 1585 GPH to 6604 GPH (model dependent)

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• 3 wave
  attachments: 1) wide angle: for making large and gentle current; 2)
  medium: for making moderate water movement and mid-range distance;