Buy USB BLE-Link - Bluetooth 4.0 Low Energy module Botland

Adafruit Bluefruit LE UART Friend - Bluetooth Low Energy (BLE) : ID 2479 : $17.50 : Adafruit Industries, Unique & fun DIY electronics and kits

DFRobot BLE Link - Bluetooth 4.0 low energy Botland - Robotic Shop

USB BLE-Link Bluetooth Module - RobotShop

USB Bluetooth 4.0 BLE Low Energy Dongle

BL620 Bluetooth Module

Adafruit Bluefruit LE USB Friend - Bluetooth Low Botland - Robotic Shop

Adafruit Bluefruit LE USB Sniffer - Bluetooth Low Botland - Robotic Shop

USB BLE-Link Bluetooth Module - RobotShop

Bluefruit LE Friend - Bluetooth Low Energy (BLE 4.0) - nRF51822 [v3.0] : ID 2267 : $19.95 : Adafruit Industries, Unique & fun DIY electronics and kits

Bluetooth Low Energy 4.0 Module - HM-10 — Arduino Official Store

Bluno Link - A USB Bluetooth 4.0 (BLE) Dongle - DFRobot