Sleep Wearable Form Factor
Compare smart rings, fitness bands, and smartwatches for overnight sleep tracking: comfort, battery habits, and sleep metric depth.
allentian C900ultra Silver Medium Smartwatch
Features
- Compatible with Android and iOS
- Sedentary alarm supported
- Health monitoring supported
- Bluetooth calling supported
- Multi-sport modes
General specs
- Brand: allentian
- Model: C900ultra
- Seller: Newegg
- ID: 9SIAEWSKAP3370
- Size: Medium
- Brand: allentian
- Model Name: C900ultra
- Part Number: 786072187693Silver
- Product Type: Smartwatch
- Sports Modes: Multi-sport
- Compatibility: Android / IOS
- Sedentary alarm: Supported
- Bluetooth Calling: Supported
- Health 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.
€33.96
Last price update: 10/21/26
Available to order
Shipping options
Delivery to 
United States
United States
Available
Smartwatch with Android and iOS compatibility, health monitoring, Bluetooth calling, sedentary alarm, and multi-sport modes.
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allentian C900ultra Compatible with Android and iOS
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| Brand | allentian | allentian | allentian | allentian | allentian | allentian |
| Model | C900ultra | C800 or C900ultra2; selection unresolved | Hw Ultra2 | C21 | Ultra 9 | |
| Price | €33.96 | €23.23 | €78.64 | €25.47 | €115.27 | €22.34 |
| 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 | C900ultra | C800 or C900ultra2; selection unresolved | Hw Ultra2 | C21 | Ultra 9 | |
| Part Number | 786072187693Silver | 786170492769Silver | 749009170970Silver | 674998787475Black | 641277286062Black | 723372269587Black |
| Product Type | Smartwatch | Smartwatch | smart watch | Smart watch | smart watch | Smart watch |
| Compatibility | Android / IOS | Android and iOS | Android / IOS | Android / IOS | Android / IOS | |
| Bluetooth Calling | Supported | Supported | Supported | Supported | Supported | Supported |
allentian C900ultra Compatible with Android and iOS
€33.96
When this device makes sense
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