It needs constant power from your car and connection to your phone for alexa app and data. iPhone or Android with Alexa app open and Bluetooth
Certified Refurbished Echo Auto- Hands-free Alexa in your car with your phone : Devices & Accessories
Echo Auto (2nd gen) review: Surprisingly great and utterly useless
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Hands-free Alexa accessory - Slim design that's easy to place in your car and 5-mic built-in so Alexa can hear you over music, A/C, or road noise. Includes a fast car charger to charge your phone on the go.
Echo Auto (2nd Gen, 2022 Release) | Add Alexa to Your Car
Echo Auto (2nd Gen) review: Alexa for your car just got a big upgrade
Echo Auto (2nd gen) review: Surprisingly great and utterly useless
The Echo Auto (2nd gen) is smaller but not smarter - The Verge
Echo Auto (2nd Gen,2022 release) hands-free Alexa car accessory
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Echo Auto-Hands-Free Alexa In Your Car With Your Phone, AYOUB COMPUTERS