This is a conch shell (Acanthopleura japonica) that has been modified to resemble a conch trumpet. It can be blown and will produce a sound, but it will be a small one. It won't produce a sound as loud as a conch trumpet from the Sengoku period. How about using it as a bear deterrent whistle for mountain climbing? Regarding the manufacturing process, it has been thoroughly cleaned, disinfected, and processed, but it is a natural product. Please refrain from purchasing if you are sensitive or seek perfection. Regarding transactions, we ask for no claims and no returns. SPEC Wooden mouthpiece with a lacquer-style finish, blowing aperture 20mm The taper of the mouthpiece is deeply cut, and a 6mm pipe is inserted, making it relatively easy to produce a sound. Length: Approximately 15.5cm Width: Approximately 8cm Weight: Approximately 176g