Amazon's new Alexa watch wakes you up when your sleep is lightest Echo Time senses lighter sleep without wearables and wakes you up within 10 to 60 minutes of your alarm clock, while the screen brightens like a sunrise. It costs $199.99. It's one of five Alexa+ devices that Amazon introduced on Wednesday:
Echo Dot, $99.99: Now also a smart home hub and Wi-Fi extender up to 1,000 square feet.
Echo Studio with Home Camera, $249.99: Recognizes things you're holding, like a box of cereal to reorder.
Alexa Photo Frame, starting at $199.99: Pulls photos from Amazon Photos itself.
Echo Show 16, starting at $499.99 on pre-order: 16-inch screen with built-in Fire TV Some features require Alexa+, which comes with the Prime.