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Color: Black
According to our smartwatch expert
The Samsung Galaxy Watch Ultra (2025) 4G Titanium Silver 47mm is an outdoor watch that you can achieve your workout goals and improve your performance with. You get extensive insight into both your physical and mental health. For example, you can get to know more about your sleep pattern and stress level. You also receive personal workout advice for running a marathon, for example. The watch is made of strong titanium and sapphire glass. This means the Watch Ultra can take a hit as well as withstand extreme cold and heights. Thanks to the built-in eSIM, you can call and text with this smartwatch even when you don't have your smartphone with you. You do need a separate 4G eSIM data plan for this. The storage is twice as large as that of its predecessor, so you can store even more music on the 64GB storage. With average use, the battery lasts 2 to 3 days.
This watch is recommended for a wrist circumference of 17 to 19cm.
Note: a charger isn't included. Want to charge the watch via a socket? Use the charger of your smartphone or order a separate charger.
Compatible with operating system | Android | |
Height | 47 mm | |
Recommended for wrist circumference | 17 - 19 cm | |
Quality of sports readings | Good | |
Quality of health readings | Excellent | |
Battery life in time mode | 80 hours | |
Type of heart rate measurement | ECG heart rate measurement, Optical heart rate measurement | |
Required iPhone model | No impact |
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It is modest but can do a lot, it can make a PDF from the ECG that you can send via WhatsApp, it can recognize atrial fibrillation, it can also use a sleep monitor to see if your breathing is going well, really too much to mention.
Michel
30 July 2025
Automatically translated from Dutch
Beautiful watch, easily adjustable, and does a lot of things very well. It all feels good, responds smoothly, and looks great on your wrist. Unfortunately, compatibility with all Android devices isn't entirely true, because for the blood pressure and ECG functions, I immediately get an error message saying those features are only available with a Samsung Galaxy phone. Fortunately, I quickly discovered that my Pixel 9 Pro phone wasn't compatible with Samsung, so I immediately returned it to the store. What's the alternative then? An iPhone with an Apple Watch, or a Samsung Galaxy phone with a Samsung Watch. In either case, you have to embrace the manufacturer's entire ecosystem to fully enjoy it.
I'm still considering what to do; I might go full-swing for Samsung after all, but you can only spend your money once!
William
21 August 2025
Automatically translated from Dutch
Coolblue takes care of everything, from taking out an insurance to repairs
For almost all accidents
More coverage in case of damage than your standard warranty
No deductible
First, add your smartwatch to your shopping cart. On the next page, choose one of the Protection Plans below. You always have a 30-day return window and pay no deductible in case of damage or theft.
2-year Protection Plan
€ 44,99
one-time2-year Protection Plan with theft cover
€ 47,99
one-timeProtection Plan - Monthly cancelable
€ 6,14
per monthProtection Plan with theft cover - Monthly cancelable
€ 6,34
per month
Product number | 966451 |
Manufacturer code | SM-L705FZS2EUB |
Brand | Samsung |
Warranty | 2 years |
Processing of your defect | Via Coolblue |
Compatible with operating system | Android | |
Required iPhone model | No impact | |
Required Android version smartphone | Android 11.0 or higher | |
Operating system | Wear OS | |
Year introduced | 2025 |
Watch case color | Black | |
Watch case material | Titanium | |
Watch case shape | Round | |
Height | 47 mm | |
Width | 47,4 mm | |
Depth | 12 mm | |
Weight | 94 g | |
Size watch case | Large | |
Recommended for wrist circumference | 17 - 19 cm | |
Total storage capacity | 64 GB | |
Shockproof |
Watch strap material | Silicone | |
Watch strap color | White | |
Closure type | Buckle | |
Interchangeable watch strap | ||
Compatibility watch strap | Product specific |
Screen type | AMOLED | |
Always-on display | ||
Data display | Digital | |
Touchscreen | ||
Color screen | ||
Adjustable watch face | ||
Type of glass | Sapphire |
Battery life in time mode | 80 hours | |
Battery life in sports mode | 48 hours | |
Battery/battery capacity | 0,59 Ah | |
Energy source solar power | ||
Wireless charging |
Internet connection options | 4G and WiFi | |
Bluetooth | ||
ANT+ | ||
Independent music player | ||
Music controls | ||
Built-in microphone | ||
Built-in speakers | ||
Spoken directions | ||
Call options | Answer phone calls and call via smartwatch | |
Smartphone notifications | Receive messages, Send messages | |
Smart reply | ||
App installation possible | ||
Camera operation | ||
NFC | ||
Contactless payment | ||
Contactless payment system | Google Pay | |
Country contactless payment | The Netherlands |
Pedometer | ||
Measures distance | ||
Speedometer | ||
Calorie counter | ||
Measures stairs climbed |
Heart rate measurement | ||
Heart rate zones | ||
Type of heart rate measurement | ECG heart rate measurement, Optical heart rate measurement | |
Heart rate measurement under water |
Quality of health readings | Excellent | |
Skin temperature sensor | ||
Oximeter | ||
Blood pressure monitor | ||
EDA sensor | ||
Sleep score | ||
Measure REM sleep | ||
Average heart rate during sleep | ||
Measure recovery during sleep | ||
Menstrual cycle tracking | ||
Pregnancy monitoring |
Quality of sports readings | Good | |
Recommended for sports | Biking, Fitness, Hiking, Mountaineering, Outdoor, Running, Swimming, Water sports, Winter sports | |
Adjust sport profiles | ||
Manual training programs | ||
Save personal records | ||
Measure fitness age | ||
Recovery advice | ||
Interval training | ||
VO2 max measurement | ||
Automatic pausing | ||
Measures minutes of intensive training | ||
Measures average speed during activity | ||
Race prognosis | ||
Measures step distance | ||
Measure running cadence | ||
Measures swimming distance | ||
Measures swimming speed | ||
Swimming lap counter | ||
Connection to fitness machines possible | ||
ATM score | 10 |
Built-in GPS receiver | ||
Global satellite navigation system | GLONASS, GPS, Galileo | |
GPS application | Navigation |
Compass | ||
Altimeter | ||
Accelerometer | ||
Thermometer |
Fall detection | ||
Alarm function | ||
Geofencing |
