This device uses an Atmel ATSAMG55J19A-MU Cortex-M4 ARM 120MHz CPU and includes an Atmel ATWINC1500B WiFi 2.4GHz module and a Cypress CYBL10563-68FNXI Cortex-M0 48MHz Bluetooth 4.1/BLE module. It also features a Micron N25Q032 4Mbyte flash memory and includes LED indicators, buttons, and a buzzer.