Your gadget can connect to an Echo device using Bluetooth Low Energy (BLE) or Classic Bluetooth (BR/EDR). This topic lists the pages that you should read depending on which Bluetooth protocol you use. Note: Your gadget can support both BLE and Classic Bluetooth. Some first-generation Echo devices support Classic Bluetooth only. For more information, see Echo devices that support gadgets . Bluetooth Low Energy If you want your gadget to connect to Echo devices over BLE, see the following topics: Pairing and Connection Flow Reconnection Flow Bluetooth Low Energy Settings Classic Bluetooth If you want your gadget to connect to Echo devices over Classic Bluetooth, see the following topics: Pairing And Connecting Flow Reconnection Flow Classic Bluetooth setting