This Yamaer ch-200 model Alto Bb Trombone is a great instrument for beginner and adult learners. With a beautiful gold color and a length of 40 inches, this trombone is perfect for those who are looking for a reliable and easy-to-use instrument. It has a piece count of 3 and a weight of 6.49 lbs, making it easy to handle and play.The ch-200 model is made by jin yin, one of the most well-known manufacturers of musical instruments. It is opened from the manufacturer packaging and comes with a key of Bb. The package includes everything you need to get started, and the experience level is perfect for those who are just starting out. This instrument is perfect for those who are looking for a great sounding and easy-to-use trombone.