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A camera-free Echo clock uses ultrasound to time your alarm

Amazon’s new Echo Time is a $199.99 bedside smart clock that uses room temperature, presence detection, and ultrasound to estimate lighter sleep without a watch or ring. With Alexa+, its optional smart alarm can wake the user anywhere within 10…

A camera-free Echo clock uses ultrasound to time your alarm

We haven't written up this one. The Gadgeteer has the full story — the link below goes straight to it.

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