Samsung SM-R845U Galaxy Watch 3: Advanced health monitoring
Ever wished your wrist could do more than just tell time? Enter the Samsung Galaxy Watch 3—a sleek powerhouse that's like having a personal assistant, fitness coach, and health monitor all rolled into one. It's not just smart; it's practically genius, with features like SpO2 and VO2 max tracking (because who doesn’t want to know how well their lungs are working during a Netflix marathon?) and heart-rate monitoring to keep your ticker in check.
And let’s talk fitness. This watch doesn’t just count steps; it’s got built-in run coaching and auto-tracks seven activities (because remembering to hit 'start' is half the battle). Plus, it’s tough as nails—military-grade tough, actually—and water-resistant, because life happens. Whether you’re into the 41mm or 45mm size, prefer black, silver, or bronze, or fancy swapping between over 50,000 watch faces (talk about indecisive), there’s something for everyone. And with a battery that just won’t quit, you’ll spend less time charging and more time living.
Features
- Fitness tracking
- Long lasting battery
- Military-grade durability
- Water resistance
- Advanced health monitoring
General specs
- Brand: Samsung
- Model: SM-R845U
- Seller: Amazon
- ID: B08HL5K8JB
- Product Dimensions: 1.82 x 1.77 x 0.44 inches
- Item Weight: 5 ounces
- batteries: 1 Lithium Ion batteries required.
- OS: Tizen 3.0
- RAM: 1 GB
- Wireless Communication Technologies: Bluetooth
- Connectivity Technologies: Bluetooth, Wi-Fi, NFC, GPS
- GPS: True
- Special Features: Accelerometer, GPS, Activity Tracker, Heart Rate Monitor, Music Player, Notifications, Oxymeter (SpO2), Phone Call, Sleep Monitor, Text Messaging, Voice Call, Time Display, Wireless Charging
- Human Interface Input: Touchscreen
- Scanner Resolution: 360 x 360
- Battery Power Rating: 340
- Standing Screen Display Size: 34.5 Millimeters
- Memory Storage Capacity: 8 GB
- RAM Memory Installed Size: 1 GB
- First listed by seller: 7/17/25
If you are interested in more details, you can find full information on the seller's page.
Buy on Amazon
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Price History for seller Amazon
Shipping options
United States
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| Brand | Samsung | Samsung | Samsung | Samsung | Samsung | Samsung |
| Model | SM-R845U | Watch 5 Pro | SM-R940NZSAXAA | Watch 5 40mm | Watch 5 | SM-R390 |
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| Price | $54.44 | $81.62 | $299.99 | $74.44 | $73.99 | $43.99 |
| Seller | Amazon | Amazon | Amazon | Amazon | Amazon | Amazon |
| Update | Mar 11, 2026 | Mar 11, 2026 | Mar 11, 2026 | Mar 11, 2026 | Mar 11, 2026 | Mar 11, 2026 |
| Product Dimensions | 1.82 x 1.77 x 0.44 inches | 1.79 x 1.78 x 0.41 inches | 11.85 x 2.36 x 1.26 inches | 1.59 x 1.54 x 0.38 inches | ||
| Item Weight | 5 ounces | 8 ounces | 6.4 ounces | 1 ounces | 3.84 ounces | |
| batteries | 1 Lithium Ion batteries required. | 1 Lithium Ion batteries required. (included) | 1 Lithium Ion batteries required. (included) | 1 Lithium Ion batteries required. (included) | 1 Lithium Polymer batteries required. | |
| Standing Screen Display Size | 34.5 Millimeters | 1.4 Inches | 44 Millimeters | 1.4 Inches | ||
| Memory Storage Capacity | 8 GB | 2 GB | 16 GB | 1.6 GB | ||
| RAM Memory Installed Size | 1 GB | 1.5 GB | 16 MB | |||