This is a bird call from Suzuki Musical Instrument Manufacturing. When you press and twist both grips, it makes a sound like a bird's chirp. Material: Metal part: Brass, Wooden part: Maple Dimensions: 2 x 2 x 8.5cm Weight: 30g Accessories: Rosin * The sound may become difficult to produce with continued use, but applying rosin to the friction part will restore the original sound and allow for long-term use.