1. Single head/double head wave pump, anti-reverse design, large flow, energy saving and quiet 2. Solve various problems of fish tank: loud noise, large temperature difference of fish tank, turbid water body, inactive water insects, etc. 3. 360 degree all-round angle adjustment freely, convenient and practical 4. Wear-resistant shaft with strong wind, durable and powerful 5. Power cord length: 2 meters
