Amazon Echo Loop
Button-activated Alexa requests and calls through a paired phone
Keep in mind Legacy wearable profile. Current production, retailer stock and app/service compatibility were not established.
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Lowest recorded store prices take priority over announced or launch prices, within the selected source market. Currencies use the dated EUR reference rates. Deposits and recurring charges are excluded from price order; missing prices stay last. Original price records remain visible.
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The differences that matter
Sony Xperia Ear Duo
Open-ear audio, calls and original phone assistant functions
- Battery / power
- 56 mAh units / 740 mAh charging case ↗
Keep in mind Legacy assistant features depend on operating system, app and discontinued services.
Published specifications and documented constraints. See the full comparison below for prices and sources.
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| AI wearablesAdd a model |  |  |
|---|---|---|
| Prices · all markets | $129.99 USD≈ €116 EURECB 2026-10-13US · Historical price · Historical original launch offer; no current fulfilment 1 offer records & sources$129.99 USD≈ €116 EURECB 2026-10-13 US · Historical price Historical original launch offer; no current fulfilmentOriginal manufacturer 2019 Day 1 Edition invite price Original maker launch announcement. Legacy hardware and cloud services must not be assumed usable today.Check merchant offer ↗Price source ↗ Checked 2026-10-12 | Price not verified 0 offer records & sourcesNo verified price in this audit. |
| Designed for | Button-activated Alexa requests and calls through a paired phone ↗ | Open-ear audio, calls and original phone assistant functions ↗ |
| Form factor | Smart ring ↗ | Wireless open-ear under-ear stereo headset ↗ |
| Charging | Not verified | USB-C case; 7 minutes charging for about 1 hour audio ↗ |
| Battery / power | Not verified | 56 mAh units / 740 mAh charging case ↗ |
| Weight | Not verified | Approximately 10.6 g each unit; 76 g case ↗ |
| Controls | Physical button activates microphones ↗ | Not verified |
| Microphones | Two microphones ↗ | Four total beam-forming microphones ↗ |
| Speaker | Miniature built-in speaker ↗ | Not applicable to this category |
| Haptics | Vibration motor for notifications, calls and activation ↗ | Not applicable to this category |
| Phone Requirement | Paired phone required ↗ | Not applicable to this category |
| Service | Requests streamed to Alexa cloud after button activation ↗ | Not applicable to this category |
| Dimensions | Not applicable to this category | 17.5 × 59.6 × 10.2 mm each unit ↗ |
| Drivers | Not applicable to this category | 10 mm dynamic ↗ |
| Wireless | Not applicable to this category | Bluetooth 4.2/LE; NFMI between left/right units ↗ |
| Audio codecs | Not applicable to this category | SBC and AAC ↗ |
| Runtime | Not applicable to this category | Up to 4 hours audio, 16 hours total including case ↗ |
| Water / dust rating | Not applicable to this category | IPX2 ↗ |
| Availability | Limited-volume invite-only 2019 commercial programme. Current production and service compatibility were not established. | Legacy Sony profile; maker explicitly ended CLOVA on 10 March 2021 and LINE MUSIC integration on 28 May 2020. |
| Important context |
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| Editorial pick & release | No editorial ranking recorded | No editorial ranking recorded |
| Evidence | Manufacturer source Checked 2026-10-13 | Manufacturer source Checked 2026-10-13 |
Battery claims use different conditions and are not a controlled benchmark. “Not verified” is an evidence gap, not a missing feature. Prices are dated regional snapshots. Deposits, bundles and historical launch prices are labelled. Brightness measurement methods and battery workloads vary by manufacturer.