Bluetooth

ESP32(super-charged version of the popular ESP8266) WiFi and BLE, BT4.0, Smart Bluetooth breakout and development board 

Sparkfun Part Number: WRL-13990

V4.0 BLE Bluetooth

 V4.0 BLE Bluetooth CC2541 (Alt. HM-10)

This little shield fits all Pycom boards and each contain a number of sensors.

PRODUCT ID: 2995

DEV-14281

FiPy includes WiFi, Bluetooth, LoRa, Sigfox and dual LTE-M (CAT M1 and NBIoT)