The first things you will notice when unboxing the Tesoro Tuned In-Ear Pro (besides the long name) are the aluminum housing material and flat cables. Both give the audio device quite the sturdy and higher-end feel. Even though in-ears are tiny, Tesoro has made sure to brand them as much as possible - this includes a mention of the brand on top of the housing, which is quite the unusual position as nobody will ever see that while using it.
Overall, the housing's shape is quite simple, with a flat rear and centered tip. Tesoro added some surface structure for looks and better grip when handling the individual units. A Tesoro logo can be found on the enclosure's flat rear, which is where you would expect something like this to appear. While the Tuned In-Ear Pro is not the first headset to use flat cables, Tesoro has taken a bit of a unique approach to the cable's placement. The aluminum housing extends down a little bit, moving the cable's exit point downward, which removes the need to reinforce this element. While this is good, it does mean that there is a little bit of torque when used in some situations, though never enough for it to become an issue.
Looking at the housing from the side, you can clearly see where the flat cable exits the casing alongside the width of the leads. The Tuned In-Ear Pro comes with the medium tips attached, which are just slightly smaller than the driver enclosures in diameter. This means that you should be fine if you have smaller ears, for example. The reason the backs of the enclosures are flat is simple: they can be snapped together and are held in such a position due to internal magnets, which is perfect in situations where you are wearing but not utilizing them.
Taking the tip off, you are greeted by a pretty standard opening in the housing, which means you should be able to replace the tips with any pair of your choosing - for example, ones made out of foam instead of plastic.
You will find a flat in-line controller on the cable that allows you to control the music and/or volume, depending on which device you are using. iOS, Android, or Windows - all of these offer different functionality over the buttons, and Tesoro has wisely chosen not to place any labels on any. However the backside of the controller sports some more Tesoro branding, which may be a bit much for style-conscious users. Instead, it would have been nicer to see the logo engraved onto the housing of the controller as that is a bit more subtle.
Last but not least, the 3.5 mm plug is gold-plated, and the connection to the flat cable is designed in such a way that you should not have to worry about any defects occurring here. Interestingly enough, Tesoro has chosen to go with a straight connector while the majority of brands nowadays tend to go for angled ones. I, for one, am a fan of Tesoro's implementation, but both variants have their pros and cons, so this is mostly subjective.