Ultra-Stamina Smartwatch
- Tested to U.S. MIL-STD 810H standards.
- Built tough for demanding work environments.
- Up to 30+ days of battery life on a single charge.
- We offer a 90-day money-back guarantee and 1-year warranty - because we know this is the best tough smart watch you'll ever own..
- Trusted by over 300,000 customers across the U.S.
🔒 Secure Checkout With
Each watch box contains:
Silicone watch strap *1
Steel watch strap *1
Screen protector *2
USB charging cable *1
Printed user manual *1
Free shipping 2-3 Days(USA)
Free shipping 3-8 days(EU,AU,NZ)
We offer a 90-day money-back guarantee and 1-year warranty - because we know this is the best tough smart watch you'll ever own.
Built for real toughness—designed with pros, powered by performance, and equipped with a built-in LED flashlight other brands don’t offer.
Whether it’s late-night work, off-grid adventure, or emergencies, it keeps you ready in the dark.
Built for real toughness—designed with pros, powered by performance, and equipped with a built-in LED flashlight other brands don’t offer.
Whether it’s late-night work, off-grid adventure, or emergencies, it keeps you ready in the dark.
This smartwatch is proven by military-grade tests to handle real-world extremes.
It’s survived harsh drops, shocks, vibrations, extreme temperatures, humidity, and water exposure—ensuring reliable performance from freezing mornings to scorching afternoons.
Built tough to meet military standards, it delivers long-lasting durability you can count on.
This smartwatch is proven by military-grade tests to handle real-world extremes.
It’s survived harsh drops, shocks, vibrations, extreme temperatures, humidity, and water exposure—ensuring reliable performance from freezing mornings to scorching afternoons.
Built tough to meet military standards, it delivers long-lasting durability you can count on.
⭐⭐⭐⭐⭐
James Walker · Verified Buyer
“I received mine surprisingly fast from the U.S. warehouse. The watch feels premium and performs even better than expected. The flashlight is brighter than I thought and super useful at night. After three full weeks of daily use, the battery was still going strong. It paired instantly with my iPhone 14 Pro. The Mingdaln is durable, stylish, and loaded with practical features — definitely a great smartwatch for anyone who wants performance and reliability.”
⭐⭐⭐⭐⭐
James Walker · Verified Buyer
“I received mine surprisingly fast from the U.S. warehouse. The watch feels premium and performs even better than expected. The flashlight is brighter than I thought and super useful at night. After three full weeks of daily use, the battery was still going strong. It paired instantly with my iPhone 14 Pro. The Mingdaln is durable, stylish, and loaded with practical features — definitely a great smartwatch for anyone who wants performance and reliability.”
Better performance than big-name smartwatches—at a price you’ll actually love. Tougher, smarter, and far more affordable. All the top-tier features, without the top-tier price.
Better performance than big-name smartwatches—at a price you’ll actually love. Tougher, smarter, and far more affordable. All the top-tier features, without the top-tier price.
After hundreds of hours of craftsmanship, assembly, and rigorous engineering, the AK87 Watch delivers both elegance and toughness with its IP68 water resistance and dustproof design.
With features that outsmart any other watch:
✅ 24/7 Heart-Rate Tracking
✅ Blood Oxygen (spo2)
✅ Sleep Stages & Sleep Score
✅ Reply and Make Calls
✅ Alarm
✅ Incoming call notifications
✅ Message reminders
✅ Bluetooth music
✅ Remote photo taking
✅Sedentary reminder
✅ +100 Sport Modes (Outdoor running included)
✅ +1000 watch faces (customizable)
✅Outdoor LED flashlight
✅ Calories
✅ Weather Reports
✅ 1000 mAh battery
✅ 1.7 inch Screen
✅ Android, iOS
After hundreds of hours of craftsmanship, assembly, and rigorous engineering, the AK87 Watch delivers both elegance and toughness with its IP68 water resistance and dustproof design.
With features that outsmart any other watch:
✅ 24/7 Heart-Rate Tracking
✅ Blood Oxygen (spo2)
✅ Sleep Stages & Sleep Score
✅ Reply and Make Calls
✅ Alarm
✅ Incoming call notifications
✅ Message reminders
✅ Bluetooth music
✅ Remote photo taking
✅Sedentary reminder
✅ +100 Sport Modes (Outdoor running included)
✅ +1000 watch faces (customizable)
✅Outdoor LED flashlight
✅ Calories
✅ Weather Reports
✅ 1000 mAh battery
✅ 1.7 inch Screen
✅ Android, iOS
Frequently Asked Questions
Is my smartphone compatible?
Yes!Whether it's anAndroid or iOS system, you can pair your phone and interact receiving calls, SMS, and app notifications!Just upload the app on your watch QR Code and within 1 minute your watch will be connected. Allow notifications from your phone and you will even receive the weather report in your watch!
What is it made of?
It's made from Stainless Steel, Aluminum alloy, Titanium and Mineral Glass.
How resistant it is?
Ultra-Stamina Smart Watch has an IP68 certification, it's been tested underwater, in the snow (even freezing the watch), and in other harsh Environments. While it is certified water-resistant, pressing buttons underwater is not recommended.Mingdaln Smartwatches are very well known for their excellent resistance to hard impacts and harsh environments. However, all the resistant characteristics have been tested in controlled conditions. For that reason, we recommend not submitting your watch to extreme tests since some non-controlled factors could affect the actual performance.
Can I receive calls and text messages with this watch?
Yes, 100%! You can answer or make calls and talk on them! Stay connected and easily stay on top of notifications! The watch displays incoming calls and allows you to decline or answer them on your phone, so you never miss an important call. Simply allow phone notifications to scroll through messages and social media notifications right on your watch. You can access all major apps like Facebook, Instagram, WhatsApp, and more.
Will this watch fit to my wrist?
Yes!The strap is suitable and adjustable to any wrist (11 INCHES STRAP that comes with an adjustable tool). It'ssuitable for men and women.
Can I receive calls and text messages with this watch?
It can last up to 30 days per charging cycle depending on how you use it, and on stand by time about 100 days. On average, it lasts 30 days in full usage mode. It can reach 100% charge in about 30 minutes. However, to make sure it reaches full charge, we suggest letting it charge for 1 - 2 hours.
What does my package include?
Your package comes with the x1Ultra-Stamina Smartwatch, Silicone watch strap *1,Steel watch strap *1,Screen protector *2,USB charging cable *1,Printed user manual *1
How do I track my package?
You can check the status of your order at any timeby going to the following link:Order Status.
How do I contact Mingdaln?
If you need to contact us, don't hesitate to send an email to our customer support team at Contact Us