YAMAHA Silent Brass System SB7J, trumpet mute with accessories. I usually practice at a rental studio, and since I rarely use the Silent Brass I bought, I'm selling it. Total usage time is within 2-3 hours. - Brand: YAMAHA - Model Name: SB7J - Included items: Pickup Mute PM7X Personal Studio STJ Connection cable USB cable (unopened) Earphones (unopened) Instruction manual Original box Note: Batteries are not included. Please purchase separately. No claims and no returns. Instant purchase without comments is welcome.