Device Selection Guide
Make an informed decision between LTE smartwatches and compact smartphone setups, recognizing trade-offs in battery life, app compatibility, and audio quality.
C21 Sports Smart Watch: BT Call functionality
For the guys who are always on the move, the Sports Smart Watch is a game-changer. Imagine making calls right from your wrist—thanks to the BT Call functionality, your phone can stay tucked away. Whether you're hitting the gym, going for a run, or just trying to remember the last time you took a break, the Multi Sport Mode has got your back (and your steps, and your calories...). And because we know you like to push limits, the Heart Rate monitoring keeps tabs on your ticker, so you can go hard without going overboard. Rain or sweat, the IP67 Waterproof rating means this watch won't bail on you. Plus, let's be honest, the sleek Sports Watches design is just the cherry on top—because who says you can't look good while breaking a sweat?
Features
- Multi Sport Mode
- Heart Rate monitoring
- IP67 Waterproof
- Sports Watches design
- BT Call functionality
General specs
- Model: C21
- Seller: Gshopper
- ID: XM2023122607
- Waterproof Rating: IP67
- Compatibility: Bluetooth
- Special Features: Heart Rate Monitor, Multi Sport Mode, BT Call
- First listed by seller: 5/30/25
If you are interested in more details, you can find full information on the seller's page.
View on seller's site
#publicidad
$49.99
Last price update: 5/30/25
Available to order
Shipping options
Delivery to 
United States
United States
Available
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Sports Smart Watch BT Call functionality
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| Brand | AOLON | Blackview | OUKITEL | |||
| Model | C21 | GTR Ultra | K55 | W70 Pro | BT103 | |
| Color | ||||||
| Rating |
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| Price | $49.99 | $39.99 | $44.00 | $49.99 | $37.99 | $24.99 |
| Seller | Gshopper | Amazon | Gshopper | Blackview | Gshopper | Amazon |
| Update | Jul 25, 2024 | Mar 11, 2026 | Jul 25, 2024 | Apr 18, 2025 | Jul 25, 2024 | Mar 11, 2026 |
| Compatibility | Bluetooth | Android, iOS | iOS, Android | |||
Sports Smart Watch BT Call functionality
$49.99
When this device makes sense
Reviews
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Mariana Ricci
June 6, 2025
Marie Phillips
June 6, 2025
Hawk
June 5, 2025
Alessia Brown
June 3, 2025
Hannah Bianchi
June 1, 2025
Sophia Johnson
June 1, 2025
Matthew Garcia
June 1, 2025