.* Made of high quality materials, durable.* Sounds: Research-based design sounds exactly like a mallard duck* Design: High end piercing for open water applications along with soft, low end raspy for finishing * Durable: Made of high impact and durable pvc * Easy to carry: Portable size is easy to carry, it must have for outdoor huntingSpecifications:* Material: PVC* Color: Transparent, Grey, Khaki (as pictures show)* Size: 12*2.5cm (Approx.) Package Content:1*Duck Whistle1. The actual colors of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness.2. Please allow slight manual measurement deviation for the data.