This is the FeatherWing OLED: it adds a 128x32 monochrome OLED plus 3 user buttons to any Feather main board including the new Particle Argon, Boron, and Xenon.
These displays are about 1" diagonal and very readable due to the high contrast of an OLED display. This screen is made of 128x32 individual white OLED pixels that provide a crisp display. Includes a reset button and three mini tactile buttons (A B and C) so you can add a mini user interface to your feather.
Works with all Feather boards and stacks with FeatherWings, using only the two I2C pins.