Sleep Wearable Form Factor
Compare smart rings, fitness bands, and smartwatches for overnight sleep tracking: comfort, battery habits, and sleep metric depth.
allentian T21 Green Medium Smart Watch
Available offers (2)
Current
Green
Newegg
€58.98
Available to order
Features
- Compatible with Android and iOS
- Bluetooth calling is supported
- Heart rate monitoring is supported
- Blood pressure monitoring is supported
- Described as waterproof
General specs
- Brand: allentian
- Model: T21
- Seller: Newegg
- ID: 9SIAEWSKAT8604
- Size: Medium
- Brand: allentian
- Model Name: T21
- Part Number: 748145379337Green
- Product Type: Smart watch
- Compatibility: Android / IOS
- Water Resistance: Described as waterproof
- Bluetooth Calling: Supported
- Heart Rate Monitoring: Supported
- Blood Pressure Monitoring: Supported
- First listed by seller: October 21, 2026
If you are interested in more details, you can find full information on the seller's page.
€58.98
Last price update: 10/21/26
Available to order
Shipping options
Delivery to 
United States
United States
Available
Medium-size smart watch with Android and iOS compatibility, Bluetooth calling, heart rate monitoring, blood pressure monitoring, and water resistance described as waterproof.
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allentian T21 Compatible with Android and iOS
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|
| Brand | allentian | allentian | allentian | allentian | allentian | allentian |
| Model | T21 | Mk60 | G206 | T500 | G206 | Tk23 |
| Price | €58.98 | €67.91 | €36.64 | €16.08 | €36.64 | €50.93 |
| Seller | Newegg | Newegg | Newegg | Newegg | Newegg | Newegg |
| Update | Nov 3, 2026 | Nov 3, 2026 | Nov 3, 2026 | Nov 3, 2026 | Nov 3, 2026 | Nov 3, 2026 |
| Size | Medium | Medium | Medium | Medium | Medium | Medium |
| Model Name | T21 | Mk60 | G206 | T500 | G206 | Tk23 |
| Part Number | 748145379337Green | 5465101195617 | 756178570614Orange | 660493900411White | 756178570614Blue | 758317959092Orange |
| Product Type | Smart watch | Smart watch | Smart watch | Smart watch | Smart watch | Smart watch |
| Compatibility | Android / IOS | Android / IOS | Android / IOS | Android / IOS | Android / IOS | |
| Bluetooth Calling | Supported | Supported | Supported | Supported | Supported | Supported |
| Heart Rate Monitoring | Supported | Listed | Supported | Supported | ||
| Blood Pressure Monitoring | Supported | Listed | Supported | Supported | ||
allentian T21 Compatible with Android and iOS
€58.98
When this device makes sense
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