The GTW 270 earpieces are sleek, with rounded black bodies that fit snugly in your ear without fins or other stabilizers (especially if you choose the right size eartip from the four included pairs). The back panel of each earpiece is a flat, metallic gray surface bearing the EPOS logo. The splash of gray adds some personality without making them look over the top or particularly oriented toward gaming. The earpieces are rated IPX5for water resistance, meaning they should hold up to rain and sweat, but you shouldn’t submerge them. A tiny button sits near the top of the left earpiece, facing forward. This serves as the sole physical control. One press plays or pauses music, or accepts calls. Two presses skips forward a track. Three presses reverses a track. Pressing and holding it brings up your phone’s voice assistant. There are no volume controls. The choice of such a small button is a surprise, especially when there’s so much real estate on the back of each earpiece to serve as a...