On October 29, 2026, Amazon launched the Echo Time smart clock and a new Echo Dot smart speaker in Japan. The Echo Time costs 35,980 yen (tax included) and the Echo Dot costs 17,980 yen. The Echo Time features ultrasonic sleep sensing, while the Echo Dot is the first in the series to include a built-in smart home hub. Both support Alexa+, the generative AI-powered voice assistant, which began early access in Japan the same day.
The two new products serve different purposes: the Echo Time focuses on bedroom clock display and sleep sensing, while the Echo Dot emphasizes voice control in every room and smart appliance integration. However, Alexa+ is not limited to buyers of the new products. It is being rolled out gradually to owners of existing compatible devices as well. Also, using the Echo Time's smart alarm with sleep sensing requires access to Alexa+ and certain settings.
Echo Time and Echo Dot: Different Roles for Different Rooms
The Echo Time is a dome-shaped smart clock designed for the bedside. Its front has a 3.2-inch round touchscreen that shows the time and alarms, as well as the weather and currently playing music. Users can choose from more than 100 clock design combinations, from calm to sporty. Impress Watch's article also highlights its usability and design as a clock.
With bedroom privacy in mind, the Echo Time has no camera. The screen can display clock faces and various information, but it does not support video streaming or video calls. It comes in three colors: Graphite, Glacier White, and Coral Pink.
The Echo Dot, meanwhile, is a compact smart speaker with a spherical body wrapped in a sound-permeable 3D knit fabric. It can be placed not only in a bedroom but also in a living room, study, or any other room, and used for music playback, the voice assistant, and controlling compatible smart appliances. It comes in four colors: the same three as the Echo Time, plus Agave Green.
In the United States, Amazon has announced five products in total: these two models plus the Echo Studio with Home Camera, Echo Show 16, and Alexa Photo Frame. However, the Japan launch announcement on October 29 covers only the Echo Time and Echo Dot. For accessories such as the dedicated stand, you will also need to check availability in Japan and any costs beyond the device itself.
The New Echo Dot's AZ3 Chip and Smart Home Hub
The new Echo Dot is equipped with the "AZ3" chip, developed in-house by Amazon. The AZ3 includes an accelerator dedicated to on-device AI processing, handling improved detection of the user's speech and removal of background noise. What Amazon describes is mainly on-device processing to improve voice recognition, which does not mean that all of Alexa+'s generative AI processing is completed on the device.
The "Omnisense" sensor technology can detect room occupancy and temperature, and the device also supports tap controls. With voice ID, it can recognize who is speaking and, for example, play that person's playlist. While the AZ3 mainly supports voice recognition, Omnisense is responsible for sensing the surrounding environment and the user's actions.
The new Echo Dot is also the first in the series with a built-in smart home hub. It can connect thousands of compatible devices, such as lights and air conditioners, to Alexa for control. However, to use an appliance you must check whether it supports Alexa and complete the necessary setup. For appliances that don't directly support Alexa, additional equipment such as a compatible smart remote may be required.
It can also extend Wi-Fi networks. Amazon says the built-in eero Wi-Fi extender can expand the coverage of an existing eero network by up to 92 square meters (1,000 square feet). However, this feature assumes integration with an eero network and does not unconditionally extend the range of ordinary Wi-Fi routers. The 92-square-meter figure is also the manufacturer's stated value, and actual coverage will vary with the installation environment.
The Echo Time Smart Alarm Requires Alexa+ and Sensor Settings
The Echo Time's standout feature is the "smart alarm," which detects sleep state without a wearable device. It uses ultrasound to detect the user's breathing pattern and distance from the unit, and prompts waking according to sleep state. Amazon says it can determine a good moment to wake you without a smartwatch or smart ring. In U.S. product materials, it is described as a mechanism that detects when sleep is lighter.
As the wake-up time approaches, the Echo Time's screen gradually brightens, and the alarm sound also grows gradually from a low volume. At night, the screen brightness can be lowered to show only the time and the next morning's alarm. The device can also play relaxing ambient sounds and adjust room temperature in coordination with a compatible air conditioner. However, these are product features as described by Amazon and do not mean that improved sleep quality or detection accuracy has been confirmed in independent testing.
Importantly, the smart alarm using sleep sensing cannot be used simply by buying the unit. According to Amazon's product announcement and the announcement about Alexa+ becoming available in Japan, the smart alarm requires Alexa+, and both the sleep monitor and the microphone must be enabled. The conditions for use in Japan are summarized below.
| Item to check | Smart alarm requirements | Notes for purchase and use |
|---|---|---|
| Device | Echo Time: 35,980 yen (tax included) | Cost of the device itself |
| Alexa+ | Required. Early access is being offered gradually | May not be usable immediately after purchase |
| Sensor settings | Enable the sleep monitor and microphone | Disabling the microphone also stops the sleep monitor |
| Ongoing fees | Free during early access. After it ends, 3,000 yen per month; no extra charge for Prime members | End date of early access not yet announced |
Note: The above are the conditions for the smart alarm using the Echo Time's sleep sensing, and do not apply to clock display or normal alarm functions in general. Prices are based on announcements as of October 29, 2026.
The sleep monitor can be turned on or off at any time from the device settings in the Alexa app. Amazon states explicitly that if the microphone is disabled, the sleep monitor will not work. In other words, having no camera is a separate matter from whether the device senses sleep state or room occupancy. If you want to use sleep sensing, keep in mind that the microphone must stay enabled.
The Echo Time's sleep monitor is also not a medical device and is not intended for diagnosing, preventing, or treating health conditions. It is a feature that estimates sleep state to help with waking, and it is not a substitute for a medical sleep evaluation.
Costs should also be considered separately from the purchase price of the device. Alexa+ early access is free, but after it ends it will become a subscription service at 3,000 yen per month. Amazon Prime members, on the other hand, can use it at no additional charge as a membership benefit. However, Prime membership itself is paid, and some content and services, such as music, may require separate subscriptions or fees.
By linking the Echo Time with compatible smart lights, curtains, air conditioners, and the like, you can also turn on the lights or open the curtains when you wake up. However, such integrations require compatible devices and prior setup. To control appliances that don't support Alexa, you may need to consider a separately sold smart remote or similar equipment.
Is Upgrading Worth It? Alexa+ Also Works on Existing Devices
When considering the new Echo lineup, it's important to remember that using Alexa+ does not necessarily mean buying new hardware. Amazon says it will gradually extend early access to Alexa+ not only to people who buy newly supported Echo or Fire TV devices, but also to owners of existing compatible devices. You can also apply from a dedicated page, so there is no need to replace your device just to try the new conversational features. However, even for compatible devices, the timing of invitations is not uniform, and buying a new product does not guarantee that all features will be available immediately.
The reasons to buy the Echo Time are its round display suited to the bedside and its wake-up function built on the sleep monitor. Unlike conventional smart speakers, it lets you check the time and alarms on screen, and it offers an alarm that responds to your sleep state without a wearable device. On the other hand, since the smart alarm requires Alexa+ access and an enabled microphone, whether you can accept these conditions is also a factor in your decision.
For the Echo Dot, the reason to upgrade is that it works not only as a voice assistant but also as a control hub for the smart home. In addition to Omnisense room-occupancy detection and temperature sensing, and connection to compatible appliances through the smart home hub, it can also be used to extend an eero network. Households that already use smart appliances or eero in particular may find more ways to use it by combining it with their existing setup.
The two products both support the shared AI service Alexa+, but each emphasizes a different use. When considering a purchase, look beyond when you'll get Alexa+ and decide whether you truly need features your current devices lack, such as sleep sensing or the smart home hub. If you plan to integrate appliances, it's also important to check whether compatible products exist, what additional costs may arise, and what setup is required.