Thank you for viewing this item. This item is available for immediate purchase! [Product Description] This is a Silent Brass for trombone and bass trombone. A muting system that allows you to hear the sound of the wind instrument through headphones. You can practice your wind instrument without worrying about the time, even in your room. [Manufacturer] YAMAHA Yamaha [Product Name] Silent BRASS Silent Brass SB5 For trombone Muting practice system [Included Items] Pickup mute, amplifier, power cable, headphone cable, outer box. ◆ Please check the images for all included items. [Condition] ◆ The main body shows almost no signs of use, so there are no noticeable scratches or stains, and it is in a clean condition. ◆ The sponge in the amplifier's battery compartment has deteriorated over time and is crumbling. ◆ Please check the images for the condition. [Packaging] We will package the item using materials such as bubble wrap, cardboard, and stretch film as needed. We may also use recycled materials, but we are committed to careful packaging. ◆ We will ship the item within 1 to 2 days after purchase. ◆ This item is a used item, but we will clean it and disinfect it with alcohol before shipping. ◆ The product is photographed with a smartphone, so the color and condition may differ from the actual product. If you have any other questions, please feel free to ask in the comments. Thank you.