Sleep Wearable Form Factor
Compare smart rings, fitness bands, and smartwatches for overnight sleep tracking: comfort, battery habits, and sleep metric depth.
If you are interested in more details, you can find full information on the seller's page.
Medium smartwatch with Bluetooth connectivity, compatibility with Android and iOS, and heart rate, blood pressure and sleep monitoring. It also includes a calendar and multiple sports modes.
| This item | Recommendations | |||||
|---|---|---|---|---|---|---|
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allentian F5 Bluetooth connectivity
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allentian F12 2.02 screen size; unit not stated
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allentian C21 Bluetooth calling
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allentian Et550 Bluetooth calling supported
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allentian Gw55
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allentian GT4 Compatible with Android and iOS
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| Brand | allentian | allentian | allentian | allentian | allentian | allentian |
| Model | F5 | F12 | C21 | Et550 | Gw55 | GT4 |
| Price | €32.20 | €96.16 | €111.58 | €147.87 | €70.76 | €68.04 |
| Seller | Newegg | Newegg | Newegg | Newegg | Newegg | Newegg |
| Update | Nov 14, 2026 | Nov 14, 2026 | Nov 14, 2026 | Nov 14, 2026 | Nov 14, 2026 | Nov 14, 2026 |
| Size | Medium | Medium | Medium | Medium | Medium | Medium |
| Model Name | F5 | F12 | C21 | Et550 | Gw55 | GT4 |
| Part Number | 779237272163BlackGlue | 731454701464BlackSteel | 676959425408AllBlack | 735145909554BlackGlue | 738232095143AllBlack | 782014456462BlackBlackLeather |
| Product Type | Smartwatch | Smart watch | Smartwatch | Smart watch | Smart watch | Smartwatch |
| Compatibility | Android and iOS | Android / IOS | Android and iOS | Android / IOS | Android / iOS | Android / iOS |
| Bluetooth Calling | Supported | Supported | Supported | |||
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