KOSPET officially launched the TANK T4 on October 21, 2025, at a launch price of $209.99 USD. The company describes it as a rugged GPS smartwatch with a 1.43-inch AMOLED display rated up to 1,000 nits, offline maps and route navigation, 32 GB of storage, and a built-in walkie-talkie. Those are manufacturer claims; the available sources do not establish independent performance results.
What the KOSPET TANK T4 offers
The TANK T4 combines phone-free GPS functions with on-watch maps, a bright AMOLED screen, and a push-to-talk feature. KOSPET also advertises a stainless-steel “Inox 360” structure, Gorilla Glass 3, and 10 ATM + IP69K resistance. Its launch announcement says the watch supports diving to 45 m. These are specifications and durability claims from KOSPET, not independent test findings; consult the manufacturer’s instructions for water-use limits.
Key specifications published by KOSPET
- Display: 1.43-inch AMOLED, up to 1,000 nits peak brightness, and 60 Hz refresh rate.
- Navigation: Dual-band GNSS supporting six satellite systems, offline maps, real-time navigation, GPX/KML route import, and track-back and waypoint functions.
- Storage: 32 GB. KOSPET estimates room for about 5,000 songs and 100 maps, but says usable space is lower after system software and actual capacity varies with file size and use.
- Durability: KOSPET says SGS tested the watch against 20 U.S. MIL-STD-810H tests. It also specifies Gorilla Glass 3 and 10 ATM + IP69K resistance.
- Health features: Heart-rate, blood-oxygen, stress, sleep, and menstrual-cycle monitoring, plus a one-tap health check. These features are not medical diagnoses; the manual says the watch is not a professional medical device and cannot be used for medical purposes or diagnosis.
Does the TANK T4 have offline maps?
Yes. KOSPET lists offline maps and real-time navigation among the TANK T4’s functions. The setup is a file-transfer process, rather than a phone-like map search experience: the product page describes downloading maps with a computer or tablet, and importing GPX or KML routes through the Apexmove app.
How to load offline maps
- Download the map data for the region you need and extract the files.
- Dock and connect the watch to a computer or tablet using its cable.
- Copy the extracted map folder into the watch’s Map directory, following the manual’s file-copy workflow.
For route files, use the Apexmove app to import a GPX or KML file. KOSPET’s product page and manual provide the setup details: TANK T4 product page and TANK T4/M4 manual.
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- ➤【Military-Grade Toughness】Built with the Inox 360 Shield structure, this rugged smart watch features a durable stainless steel body engineered to withstand extreme conditions—from deep freezes at -58°F to intense heat up to 158°F, Certified by 20 U.S. military-standard tests for proven reliability in the harshest conditions. The 1.43” AMOLED display, equipped with with a 3rd generation Corning Gorilla 9H double layer glass.
- ➤【Offline Maps & Route Planning】The TANK T4 GPS smartwatch tracks your movements with outstanding accuracy, powered by an industry-leading dual-band GNSS positioning that connects to six satellite systems. Simply download offline maps and select your route or destination point to run your favorite paths or explore unfamiliar trails.
- ➤【23 ApexMotion Sports】KOSPET smart watches for men is engineered for professional sports, offering 23 ApexMotion sport modes and 160 freestyle training modes. This sports watch built-in 6-axis gyroscope, it accurately tracks changes in orientation, acceleration, and speed-giving you clearer insight into your body’s responses during key moments of activity.
- ➤【10ATM Waterproof for Diving】Boasting 10 ATM and IP69K ratings, the waterproof smart watch is built for demanding underwater activities, including freediving to depths of 148 feet. Its robust construction ensures it remains securely sealed and reliable under pressure.
- ➤【Extra-Large Battery Life】KOSPET TANK T4 outdoor smart watch, enjoy up to 15 days of battery life on a single charge with typical use, up to 22 hours in GPS mode, providing long-lasting performance for outdoor activities–enough for hiking, longest running, or cycling.
How far does the built-in walkie-talkie reach?
KOSPET advertises push-to-talk communication up to 40 metres without internet. The company says the range may vary with environmental conditions, so treat 40 metres as a conditional advertised maximum, not a guaranteed connection distance or an independently verified result. The feature is most relevant when nearby users need short-range communication; the specification does not establish long-distance or internet-based calling.
Battery life: compare the mode, not just the headline
KOSPET publishes different estimates depending on use. The figures below are manufacturer estimates, not independently measured runtimes.
Rank #2
- Military Rugged Smartwatch with Dual Straps: Designed for explorers, athletes, and tactical users, the KOSPET TANK T4 Special Edition smartwatch is a true rugged smartwatch engineered with an INOX 360 stainless steel body and 3rd Gen Corning Gorilla 9H glass. This military smart watch has passed 20 MIL-STD-810H tests and withstands extreme temperatures from -58°F to 158°F.
- Dual-Band GPS Smartwatch with Offline Maps: Leave your phone behind and explore confidently. This smartwatch features offline maps and dual-band GNSS positioning technology, supporting 6 satellite systems for faster and more accurate tracking. Ideal for hiking, trekking, camping, cycling, hunting, and outdoor navigation – even without cellular coverage.
- 10ATM Diving Watch & 180 Sports Modes: Built for serious performance, this waterproof smartwatch supports over 180 sports modes, including 23 ApexMotion sport modes, with advanced motion analysis powered by a 6-axis gyroscope. Rated 10ATM and IP69K waterproof, it functions as a reliable diving watch for swimming, scuba diving, freediving, surfing, rowing, and water sports up to 148 feet (45 meters).
- Extra-Large Battery Life Military Smartwatch: Forget daily charging with this smartwatch. Enjoy up to 15 days of heavy use, 22 hours of continuous GPS tracking. Perfect for travel, ultramarathons, outdoor work, backpacking, and long-distance adventures where reliable battery performance matters most.
- 24/7 Health Tracking & ApexMove App: This fitness smartwatch monitors your heart rate, sleep and daily activity in real time. Sync with the ApexMove app to track workouts, view health reports, customize watch faces, and manage notifications. Compatible with Android and iOS – perfect for smarter training and everyday wellness.
| Use mode | KOSPET estimate |
|---|---|
| Typical use | Up to 14–15 days |
| Heavy use | 9–10 days |
| Always-On Display | 5–6 days |
| Continuous GPS use | 21–22 hours |
Always-On Display and frequent GPS use are distinct operating conditions from typical use, so the longer daily-use estimate should not be read as applying to continuous GPS activity.
TANK T4 vs. TANK T3 Ultra 2 vs. TANK T3
KOSPET’s comparison, published January 6, 2026, helps separate GPS tracking from map navigation. Route recording or Route Back is not the same as viewing offline maps and navigating on the watch.
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Rank #3
- ➤【Military Rugged Smartwatch with Dual Straps】Designed for explorers, athletes, and tactical users, the KOSPET TANK T4 Special Edition smartwatch is a true rugged smartwatch engineered with an INOX 360 stainless steel body and 3rd Gen Corning Gorilla 9H glass. This military smart watch has passed 20 MIL-STD-810H tests and withstands extreme temperatures from -58°F to 158°F.
- ➤【Dual-Band GPS Smartwatch with Offline Maps】Leave your phone behind and explore confidently with this GPS smartwatch featuring offline maps and dual-band GNSS positioning technology. Supporting 6 satellite systems for faster and more accurate tracking, the watch is ideal for hiking, trekking, camping, cycling, hunting, and outdoor navigation—even without cellular coverage.
- ➤【Extra-Large Battery Life】Forget daily charging with this smartwatch. Enjoy up to 15 days of heavy use, 22 hours of continuous GPS tracking. Perfect for travel, ultramarathons, outdoor work, backpacking, and long-distance adventures where reliable battery performance matters most.
- ➤【24/7 Health Tracking & ApexMove App】This fitness smartwatch monitors your heart rate, sleep, stress, and daily activity in real time. Sync with the ApexMove app to track workouts, view health reports, customize watch faces, and manage notifications. Compatible with Android and iOS – perfect for smarter training and everyday wellness.
- ➤【10ATM Diving Watch & 180 Sports Modes】Built for serious performance, this waterproof smartwatch supports over 180 sports modes, including 23 ApexMotion sport modes, with advanced motion analysis powered by a 6-axis gyroscope. Rated 10ATM and IP69K waterproof, it functions as a reliable diving watch for swimming, scuba diving, freediving, surfing, rowing, and water sports up to 148 feet (45 meters).
| Feature | TANK T3 | TANK T3 Ultra 2 | TANK T4 |
|---|---|---|---|
| Phone-free GPS tracking | No built-in GPS | Dual-band GPS; route recording and Route Back | GPS and route functions |
| Map navigation | None | No offline maps or real-time navigation | Offline maps, real-time navigation, GPX/KML import |
| Advertised continuous GPS runtime | Not applicable | 30–35 hours | 21–22 hours |
| Water rating stated by KOSPET | 5 ATM + IP69K | 5 ATM + IP69K | 10 ATM + IP69K; 45 m dive support stated |
The comparison is manufacturer-authored, and the runtimes are KOSPET figures rather than independent test results. For readers who need map navigation on the watch, the T4 is the model in this comparison that adds offline maps and real-time navigation; the T3 Ultra 2 has the longer advertised continuous GPS runtime. See KOSPET’s model comparison.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Release price and current availability
KOSPET announced the TANK T4 at $209.99 USD on October 21, 2025. That is its historical launch price, not a statement of the current price. The official product page may show multiple configurations and changing prices, so check it for current details: KOSPET TANK T4. The announcement was distributed through PR Newswire.
Quick Recap
Best Value
- Dual-Band GPS & Offline Maps: Leave your phone behind and explore confidently. This smartwatch features offline maps and dual-band GNSS positioning technology, supporting 6 satellite systems for faster and more accurate tracking. Ideal for hiking, trekking, camping, cycling, hunting, and outdoor navigation – even without cellular coverage.
- Military Rugged Smartwatch with Dual Straps: Designed for explorers, athletes, and tactical users, the KOSPET TANK T4 Special Edition smartwatch is a true rugged smartwatch engineered with an INOX 360 stainless steel body and 3rd Gen Corning Gorilla 9H glass. This military smart watch has passed 20 MIL-STD-810H tests and withstands extreme temperatures from -58°F to 158°F.
- 24/7 Health Tracking & ApexMove App: This fitness smartwatch monitors your heart rate, sleep, stress, and daily activity in real time. Sync with the ApexMove app to track workouts, view health reports, customize watch faces, and manage notifications. Compatible with Android and iOS – perfect for smarter training and everyday wellness.
- 10ATM Diving Watch & 180 Sports Modes: Built for serious performance, this waterproof smartwatch supports over 180 sports modes, including 23 ApexMotion sport modes, with advanced motion analysis powered by a 6-axis gyroscope. Rated 10ATM and IP69K waterproof, it functions as a reliable diving watch for swimming, scuba diving, freediving, surfing, rowing, and water sports up to 148 feet (45 meters).
- Extra-Large Battery Life Military Smartwatch: Forget daily charging with this smartwatch. Enjoy up to 15 days of heavy use, 22 hours of continuous GPS tracking. Perfect for travel, ultramarathons, outdoor work, backpacking, and long-distance adventures where reliable battery performance matters most.
Rank #4
- Military-Grade Rugged Smartwatch: Built with an INOX 360 stainless steel body and 3rd Gen Corning Gorilla 9H glass, the TANK T4 smartwatch withstands extreme temperatures from –58°F to 158°F and has passed 20 MIL‑STD‑810H tests. Designed for explorers, outdoor athletes, tactical users, and industrial professionals, it delivers military‑grade toughness that shrugs off shocks and scratches—keeping you reliably on track in any harsh environment.
- Offline Maps & Dual‑Band GPS: Leave your phone behind—the TANK T4’s dual‑band GNSS connects to six satellite systems for ultra‑precise positioning, even in narrow canyons or thick woodlands. Download offline maps and plan your routes, making it ideal for hiking, trekking, hunting, cycling, or backcountry camping. Enjoy clear turn‑by‑turn navigation without cellular coverage, so you can confidently explore unfamiliar trails.
- 10ATM Waterproof & 180 Sports Modes: Built for serious training, this smartwatch features 180+ sport modes (including 23 ApexMotion modes) and a 6‑axis gyroscope for precise motion tracking. With 10ATM and IP69K water resistance, it handles swimming, scuba, freediving, surfing, rowing, and more—reliably down to 148 feet (45 meters). Optimize every stroke and stride with real‑time data, whether on land or underwater.
- Large Battery Life & Walkie-Talkie: Forget daily charging with this smartwatch. Enjoy up to 15 days of typical use, 22 hours of continuous GPS tracking. Perfect for travel, ultramarathons, outdoor work, backpacking, and long-distance adventures where reliable battery performance matters most. And with the built‑in walkie‑talkie, you can instantly communicate with up to four people via a simple touch-and-hold.
- 24/7 Health Tracking & ApexMove App: This fitness smartwatch monitors your heart rate, SpO₂, sleep, and daily activity in real time. It syncs with the ApexMove app to let you track workouts, view health reports, customize watch faces, and manage notifications. Compatible with Android and iOS, it’s ideal for smarter training and everyday wellness.
Who should consider the TANK T4?
- Consider it if you want a rugged smartwatch with built-in GPS and on-watch offline maps, and are willing to transfer map files using a computer or tablet.
- Compare it with the T3 Ultra 2 if longer advertised continuous GPS runtime matters more than offline map navigation.
- Check the limitations if your decision depends on real-world battery, GPS, radio-range, or durability performance: the sources cited here provide manufacturer specifications and instructions, not independent test results.
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
