Hardware Requirements for Alexa Gadgets

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Note: On December 31, 2021, we paused support for third-party device makers working with Alexa Gadgets, while we work to create an even better developer and customer experience. Please stay tuned to the Amazon developer portal for updates. In the interim, please visit the landing pages for Alexa Voice Service, Alexa Connect Kit, and Alexa Skills Kit to discover ways you can provide new customer experiences with voice.

This topic lists the hardware requirements for Alexa Gadgets.

Requirements

Description	Requirement
MCU/CPU	Varies based on the desired experience. As a reference, the Echo Wall Clock uses an ARM-Cortex M4 family SOC clocked at 48 MHz.
Memory	A minimum of 16 KB for protocol buffer and security support. The memory requirement may be higher depending on the complexity of the gadget.
Bluetooth	Your gadget must support Bluetooth 4.2 or above. This can be Classic Bluetooth or Bluetooth Low Energy.
Pairing	Your gadget must be able to enter pairing mode, either via a mechanical button or switch, or through some other mechanism like powering off and on.