The Tank T4 | Rugged 6-Satellite GPS Smartwatch — 10ATM Diving Certified, Stainless Steel Bezel

Economisez 20%
EastSupplier PlatformSKU: 1005010359453110-Silver n Strap Film-United States

Color: Silver n Strap Film
Prix:
$686.97 $858.71

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Description

A Watch Does Not Tell Time. It Tells a Story of Engineering Conviction.

The KOSPET Tank T4 is not a smartwatch that happens to be durable. It is a military-grade instrument that happens to tell time. Forged from a unified stainless steel chassis — bezel, case, and back panel — and armored with Corning Gorilla Glass 3, the Tank T4 was designed for operators who navigate by satellite constellation, dive into the abyss at 10 atmospheres, and expect their gear to survive what they survive. Six independent GPS satellite systems triangulate your position whether you are summiting in the Cascades or traversing the Gobi. Offline topographic maps render without cellular signal — because the wilderness does not care about your data plan.

Beneath the hardened exterior lies a physiologist: 24-hour heart rate variability tracking, blood oxygen saturation monitoring under exertion, stress-level quantification through HRV analysis, and mood-state inference from biometric baselines. The always-on display runs 5 to 6 days on a single charge — not because battery life is a spec to inflate, but because a tool that fails on day three of an expedition is not a tool at all. With Apple Health and Strava integration for iOS, and Samsung Health plus Google Fit for Android, the Tank T4 does not lock you into an ecosystem. It serves whichever health platform you have already built your data around.

This is not a wrist computer. It is a navigation console, a biometric lab, and a dive computer — engineered into a single piece of stainless steel that weighs less than a field compass.


Technical Specifications

  • Construction: Stainless Steel Bezel, Case & Back Panel; Corning Gorilla Glass 3 Cover Glass
  • Navigation: 6-Satellite GPS (GPS, GLONASS, Galileo, BeiDou, QZSS, NavIC) with Offline Topographic Maps
  • Water Resistance: 10 ATM (100 meters) — Diving Certified
  • Health Sensors: 24H Heart Rate, Blood Oxygen (SpO2), Stress Level, Mood Tracking
  • Activity Tracking: Steps, Distance, Calories, Multi-Sport Modes
  • Display: Always-On Display (AOD) with Up to 5-6 Days Battery Life in AOD Mode
  • Compatibility: iOS (Apple Health, Strava) | Android (Samsung Health, Google Fit, Strava)
  • Features: Alarm, APP Download, Notification Sync, Compass, Barometer, Altimeter

Frequently Asked Questions

Q: Does the GPS work without a phone connection?
A: Yes. All six satellite systems operate independently. Offline maps are stored on the device — no cellular or Bluetooth connection required for navigation.

Q: Can I swim or dive with the Tank T4?
A: The 10 ATM certification means it is rated for surface swimming, snorkeling, and recreational diving to 100 meters. The stainless steel construction resists saltwater corrosion.

Q: How does the mood tracking work?
A: The watch analyzes HRV (heart rate variability), resting heart rate trends, and activity patterns over 24-hour cycles to infer physiological stress and mood states. This is wellness guidance, not medical diagnosis.

Q: What is the actual battery life in real-world use?
A: With always-on display enabled: 5-6 days. In power-saving mode with periodic GPS use: 12-14 days. Heavy GPS tracking reduces this to approximately 30 hours of continuous navigation.

Customer Reviews

Customer Reviews

Based on 3 reviews
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J
James Whitfield
Outstanding hardware, app needs polish

The build quality on this watch is absurd for the price point. Stainless steel case, Gorilla Glass, feels like a $600+ device. GPS tracks are accurate within 3 meters on my trail runs. Knocking one star because the companion app could use a UI refresh — it's functional but not polished. Hardware-wise this is easily a 5-star product.

D
David Okonkwo
The dive certification sold me — delivered on land too

Bought this primarily for the 10ATM rating since I free-dive regularly. It's held up through 20+ saltwater sessions without any fogging or button stick. The HRV-based stress tracking was a surprise bonus — I've actually adjusted my training recovery based on the morning readings. Only knock: the charging cable is proprietary. But that's every sports watch.

M
Marcus Chen
Finally a rugged watch that doesn't look like a toy

I've gone through three Garmins and a Suunto over the years. The Tank T4 is the first watch that genuinely feels overbuilt in the right ways — the stainless steel bezel has already taken a rock scrape on a climbing approach and shows zero marks. GPS lock is faster than my Fenix and the offline maps actually render legibly. Battery lasted 5 days with AOD on, exactly as advertised. If you're on the fence, get off it.

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