Yes, a phone trumpet. This acoustic device attaches solely to the HTC One smartphone. The product was endorsed by HTC as part of their “Here’s to Creativity” campaign. The HTC One is known for its unique feature of having two “BoomSound” speakers located on the front face of the device so that they face the user. Then “there’s a horn-like gramophone cone amplifying the sound of each BoomSound speaker”. As previously stated, it is acoustic, meaning no electronics are involved. It is also built by the method of 3D printing and is constructed out of a combination between stainless steel and copper. The shocking part about this equipment is its whopping price of $8,000 based on the materials used and the amount of work that must be done by hand to produce it.