Bluetooth
Flora Wearable Bluefruit LE Module
Bluefruit LE UART Friend - Bluetooth (BLE)
Adafruit Feather nRF52 Bluefruit LE
Adafruit Bluefruit LE Shield for Arduino
Adafruit Feather M0 Bluefruit LE
Bluetooth Mate Silver
Bluetooth Mate Gold
Adafruit Feather 32u4 Bluefruit LE
Bluefruit LE Friend (BLE 4.0) V2.0
HC-06 Bluetooth Serial Module