Features:

 ARM Cortex M4F (with HW floating point acceleration) running at 64MHz

 1MB flash and 256KB SRAM

 Native Open Source USB stack - pre-programmed with UF2 bootloader

 Bluetooth Low Energy compatible 2.4GHz radio (Details available in

the nRF52840product specification)

 FCC / IC / TELEC certified module

 Up to +8dBm output power

 1.7v to 3.3v operation with internal linear and DC/DC voltage regulators

 21 GPIO, 6 x 12-bit ADC pins, up to 12 PWM outputs (3 PWM modules

with 4 outputs each)

 Pin #3 red LED for general purpose blinking, NeoPixel for colorful

feedback

 Power/enable pin

 Measures 2.0 x 0.9 x 0.28 (51mm x 23mm x 7.2mm) without headers

soldered in

 Light as a (large?) feather - 6 grams

 4 mounting holes

 Reset button

 SWD connector for debugging

 Works out of the box with all of our Adafruit FeatherWings! (Even the

UART-using ones like the GPS FeatherWing)