The actual accessory is nearly as simple as it gets: a 3.5mm headphone plug juts out the side of a U-shaped piece of plastic. At the two open ends are ports for headphones and a speaker, respectively marked with raised plastic symbols. Plug the appropriate accessories into the right ports, then plug the entire thing into your iPhone, and you’re good to go. For convenience, an included keychain cap fits over the plug, allowing you to keep the…
