Specifications: This wind bird repeller works by the resistance caused by the difference between the wind pressure and the area of the blades. The reflector frame of this product is also designed into a bowl shape to supplement the power and increase the power and speed of the bird repeller. The rapid rotation of the wind blades and the mirror in different directions can cause disturbance and fright to the birds' vision, and achieve the effect of repelling birds. Item Name: Bird Repeller Material: Plastic, Mirror Swing Wind Force: ≥ 0.5 Level Bird Repellent Range: ≥ 3.6m Service Life: More Than 8 Years Scope of Application: High-voltage Transmission And Distribution Towers, Pole Towers, Substations, Outdoor High-voltage Substation Equipment, Orchards, Fish Ponds, Farmland Features: 360 Degree, Practical, Durable Size Details: S: 29.5cm x 19cm x 4.5cm/11.61" x 7.48" x 1.77" (Approx.) L: 39cm x 29.5cm x 6cm/15.35" x 11.61" x 2.36" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Bird Repeller