Sleep Wearable Form Factor
Compare smart rings, fitness bands, and smartwatches for overnight sleep tracking: comfort, battery habits, and sleep metric depth.
allentian C900ultra Black Medium Smartwatch
Features
- Bluetooth calling
- Sedentary alarm
- Health monitoring
- Multi-sport modes
- Compatible with Android / iOS
General specs
- Brand: allentian
- Model: C900ultra
- Seller: Newegg
- ID: 9SIAEWSKAK4177
- Size: Medium
- Brand: allentian
- Model Name: C900ultra
- Part Number: 786072187693Black
- Product Type: smartwatch
- Sports Modes: Multi-sport
- Sedentary alarm: Sedentary alarm clock
- Bluetooth Calling: Bluetooth call
- Health Monitoring: Health monitor
- Operating System Compatibility: Android / IOS
- 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 Bluetooth calling, a sedentary alarm, health monitoring, multi-sport modes, and compatibility with Android / iOS.
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allentian C900ultra Bluetooth calling
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|
| Brand | allentian | allentian | allentian | allentian | allentian | allentian |
| Model | C900ultra | C800 or C900ultra2; selection unresolved | S9 | C21 | Ultra 9 | |
| Price | €33.96 | €23.23 | €18.32 | €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 | S9 | C21 | Ultra 9 | |
| Part Number | 786072187693Black | 786170492769Silver | 786183240974Black | 674998787475Black | 641277286062Black | 723372269587Black |
| Product Type | smartwatch | Smartwatch | smartwatch | Smart watch | smart watch | Smart watch |
| Bluetooth Calling | Bluetooth call | Supported | Supported | Supported | Supported | |
| Compatibility | Android and iOS | Android / IOS | Android / IOS | Android / IOS | ||
| Heart Rate Monitoring | Supported | Heart rate | Supported | |||
allentian C900ultra Bluetooth calling
€33.96
When this device makes sense
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