Unlike Ribbon, which shipped with everything from a wall charger to a 3.5mm audio cable and earphones, Gain has been stripped down to the basics: you get a USB cable for charging, three sets of rubber eartips, a pair of inexpensive-feeling earphones, and the Bluetooth unit itself—a roughly 1.55” by 0.9” by 0.55” plastic box with a mirrored front surface. Five different colors are available for the plastic, which ranges from…