KOSPET tank m4 smartwatch silver with silicone straps#color_silver
KOSPET tank m4 smartwatch silver with silicone straps#color_silver
KOSPET tank m4 smartwatch silver with silicone straps#color_silver
KOSPET tank m4 smartwatch silver with silicone straps#color_silver
KOSPET tank m4 smartwatch silver with silicone straps#color_silver
KOSPET tank m4 smartwatch silver with silicone straps#color_silver
KOSPET tank m4 smartwatch silver with silicone straps#color_silver
Official Launch

KOSPET TANK M4 Smartwatch

Sale Price$209.99 USD

Ambassador Launch Celebration — Get your brand new TANK T4/M4 for only $184.99 now. The code will be applied automatically at checkout.

Ends in --
Code: CHT4M4
Launch Special

Terms & Conditions

The code will be applied automatically at checkout.

One use per order for T4 / M4 only.

Offer valid until November 13th.
Color: Silver
Note: Your smartwatch will be shipped from October 20th.

Free Shipping

1-Year Warranty

7-Day Trial

24/7 Support 

50% Off Accessories with Your Watch

50% Off

Not valid with other product offers. New leather and nylon straps are not included.

KOSPET-22mm-Premium-Archlan-Leather-Strap-in-black-1#color_black
New

KOSPET 22mm Premium Archlan Leather Strap

Brown
$19.99 USD
KOSPET Tank M4 Smartwatch Power Pocket
New

KOSPET Tank M4 Smartwatch Power Pocket

$19.99 USD
KOSPET TANK M4 Protective Film

KOSPET TANK M4 Protective Film

$6.50 USD
$12.99 USD
kospet-22mm-woven-_nylon_sport-loop-strap-black-1#color_Dark Grey / Orange Stripe

KOSPET 22mm Woven Nylon Sport Loop Strap

Dark Grey / Orange Stripe
$15.99 USD
KOSPET 22mm Camouflage Strap

KOSPET 22mm Camouflage Strap

$8.00 USD
$15.99 USD
#color_Orange & Yellow

KOSPET 22mm Magnetic Strap

Orange & Yellow
$8.00 USD
$15.99 USD
KOSPET_22mm_Stainless_Steel_Double_Deployant_Strap-black#color_black

KOSPET 22mm Stainless Steel Double Deployant Strap

Black
$10.00 USD
$19.99 USD
#color_silver

KOSPET 22mm Stainless Steel Folding Clasp Strap

Silver
$10.00 USD
$19.99 USD

KOSPET TANK M4 Smartwatch

Silver
Sale Price$209.99 USD
Overview

Built for New Depths

Built with 10 ATM and IP69K water resistance, it’s ready to dive with you.

Master Every Dive

Plunge into your diving excursions with three built-in dive modes and specialized dive data.

Tried and Tested Durability

Crafted with Inox 360 stainless steel, SGS-certified, and tested to 20 MIL-STD-810H standards.

Adaptive Visibility Day and Night

With an integrated ambient light sensor, the 1.96" AMOLED display remains clear under various lighting conditions.

Pro-Level Metrics for Peak Performance

Optimize your training and recovery with 23 ApexMotion sports modes and dedicated performance metrics.

Upgraded 24/7 Health Monitoring

Stay in tune with your body via the advanced 4PD sensor for more precise health measurements.

More Customization, Deeper Immersion

Access deeper health and fitness insights, exploration features, and personalized options in the Apexmove App.

Gold Winner at 2025 Product Design Awards

Celebrated for its innovative design that superbly blends style with performance, KOSPET TANK M4 won Gold awards at both the MUSE Design Awards and the London Design Awards.

Rugged Aesthetics Reinvented

Battle -50℃ extreme cold, outlast 70℃ blazing heat, endure humidity, shock, and more — KOSPET TANK M4 is a tactical smartwatch, tested by SGS, an independent European lab, against 20 U.S. MIL-STD-810H standards, ready for your most rugged adventures. An integrated ambient light sensor ensures its 1.96-inch AMOLED display remains clear from dawn to dusk.

AMOLED with Auto-Brightness

As magnificent as its 1.96-inch AMOLED display with peak brightness of 1000 nits, KOSPET TANK M4 features an embedded ambient light sensor that automatically adjusts the screen brightness based on the surrounding ambient light conditions.

410 × 502

Resolution

331

PPI

1,000nits

Peak Brightness

60Hz

Refresh Rate

Inox Shield Structure from Top to Bottom

From the bezel and the case to physical buttons, KOSPET TANK M4 is sculpted with an Inox 360 shield structure featuring full stainless steel construction, striking the perfect balance between exceptional strength and timeless design.

Proven Toughness,
SGS Tested

Tested and proven by SGS, the Europe’s leading independent lab, KOSPET TANK M4 demonstrates its superior resilience and toughness by passing up to 20 U.S. MIL-STD-810H tests. The rugged smartwatch thrives with you, however dusty, muddy, or rainy the adventure gets.

High-temperature
Operation Test

Low-temperature Operation Test

Salt Fog / Corrosive
Environments Test

Rain Test

Shock Test

Sand and Dust Test

Low Pressure Storage Test
Low Pressure Operation Test
High-temperature Storage Test
High-temperature Operating Test
Low-temperature Storage Test
Humidity Test
Fungus Test
Salt Fog / Corrosive Environments Test
Sand and Dust Test
Immersion Test
Low-temperature Operating Test
Temperature Shock Test
Contamination by Fluids Test
Solar Radiation Test
Rain Test
Vibration Test
Functional Shock Test
Transit Drop Test
Shock Test
Freeze-Thaw Test

Brave Deeper with
Confidence

With 10 ATM and IP69K water resistance ratings, KOSPET TANK M4 is not just a rugged smartwatch but also a reliable scuba diving watch alternative. It is built to endure 100-meter water pressure and support dives up to 45 meters—making every swim, surf, or dive worry-free.

10 ATM

Water Resistance

Tested by SGS, Europe's leading independent lab.

*Note: The smartwatch should not be worn during hot showers, in saunas, or during any other activities that involve high temperatures and/or high levels of humidity.

Delve Deeper with Ambition

Built to endure 10 ATM and IP69K conditions, the KOSPET TANK M4 functions as a versatile waterproof smartwatch, offering three dedicated dive modes to enrich your underwater experiences. Explore a wide array of diving metrics, including depth, dive time, ascent and descent rates, and more.

Freedive Mode

Scuba Dive Mode

Gauge Mode

Freedive Mode

Besides tracking surface intervals crucial for diving safety, KOSPET TANK M4 monitors each freediving session with data like dive time, maximum depth, and average temperature, complemented by its built-in breath-holding training and tests for improved stamina.

Scuba Dive Mode

Preset parameters like oxygen percentage and PO2 limit on KOSPET TANK M4, and get a broader picture of your recreational scuba diving. Apart from underwater insights such as NDL, the smartwatch comes with safety stops and decompression stops to help you reduce the risk of decompression sickness.

Gauge Mode

The Gauge mode on KOSPET TANK M4 functions as a basic bottom timer or as a backup to a dedicated dive computer. It displays dive time and depth to provide experienced divers with more control underwater.

Maximize Your Sports Performance

Thanks to support for 23 ApexMotion sports modes and 160 freestyle training modes, KOSPET TANK M4 stands out among cool outdoor watches, serving to track your every movement and every effort through a broad range of specialized data — from real-time running metrics and elevation gain to pool laps and gym workouts.

Run Smart, Race Fast

From real-time pace and cadence during track running to VO2 max and recovery time in trail running, KOSPET TANK M4 assists you to measure your every move, every effort, and every improvement.

Cycle Your Way to Fitness

Speed, elevation gain, and training load — KOSPET TANK M4 captures the metrics that matter for both road and mountain cyclists. With 3D distance, vertical speed, and heart rate zones, you can take a closer look at every ride.

King of the Pool & Open Water

Swim faster and more efficiently with the KOSPET TANK M4, a rugged waterproof watch for swimming, in the pool or open water through calculations of SWOLF, lap count, and average pace, alongside automatic stroke identification, stroke rate, heart rate zones, and more.

Capture Every Glide

KOSPET TANK M4 tracks every shift in elevation while skiing, snowboarding, or cross-country skiing. It also monitors sliding distance, maximum speed, and heart rate, turning your day on the slopes into a full performance picture.

Ascend to New Heights

Whether it's a steep, rocky trail or a snow-covered summit, you can see the climb towards the peak on-screen and in numbers, including duration, heart rate, and calorie consumption.

More Modes in Action

From outdoor enthusiasts who enjoy hiking and tennis to gym-goers well on the way to reaching workout goals, stay fit and active with 160 freestyle training modes and auto-detection of 6 sports movements supported on KOSPET TANK M4.

Running

Cycling

Swimming

Skiing

Mountaineering

More Modes

Every Move Counts

With its advanced 6-axis gyroscope, KOSPET TANK M4 keeps up with your intense workouts and swift directional changes. It accurately captures shifts in motion, posture, and momentum — delivering more precise data, smarter activity analysis, and deeper insights into how your body performs when it matters most.

Stay Way Ahead of the Curve

KOSPET TANK M4 is designed for elite runners and those who aspire to push their limits. With support from precision dual-band (L1+L5) and six satellite positioning systems, the smartwatch tracks every lap in track running and every route during trail running with exceptional precision.

Full-Blown
Positioning Accuracy

To give a strong boost in positioning and keep pace with your performance, KOSPET TANK M4 leverages the brand new OPDR algorithm that tracks your real-time activity status despite weak or unavailable GPS signals — under bridges, among high-rise buildings, and other challenging conditions.

32GB Storage,
More Space for What Matters

KOSPET TANK M4 is a smartwatch with 32 storage capacity for impressive music and offline map storage. It holds about 100 offline maps or 5,000 songs, giving you both navigation and entertainment without relying on your phone—perfect for staying informed and inspired on the go.

*Disclaimer: Actual available storage may be less than 32GB due to system software. Music and map capacity varies based on file format, quality, and usage conditions.

Route Import
& Offline Map Support

Chart and navigate your own path with KOSPET TANK M4 — import GPX or KML route files via the Apexmove App or download offline maps online using your computer or tablet.

Stay in Touch with
Walkie-talkie

Whether you are cycling through the woods or hiking along a trail with your friends, use the built-in Walkie-talkie on KOSPET TANK M4 to instantly communicate with each other via a simple touch-and-hold.

*Range may vary with environmental conditions.

Shed More Light on Your Health

Powered by the cutting-edge 4PD health sensor that captures richer optical signals for improved measurement precision, KOSPET TANK M4 elevates daily health monitoring to a whole new level, even during high-intensity workouts.

24H Wrist-based Health
Management

24H Wrist-based Health Management

Heart Rate Monitoring

Stay informed about your heart health with all-day heart rate monitoring and abnormal heart rate alerts, all supported on the KOSPET TANK M4, a rugged waterproof heart rate monitor watch built for both daily use and outdoor adventures.

Blood Oxygen Monitoring

KOSPET TANK M4 measures your SpO2 throughout the day with low blood oxygen alerts to keep an eye on the condition of your respiratory system.

Sleep Tracking

Create a sleep schedule that suits you and wake up to your sleep progress and total time spent in main sleep stages (including REM) on KOSPET TANK M4.

Menstrual Cycle Tracking

KOSPET TANK M4 tracks your menstrual cycle for better health with predictions and reminders for your upcoming period, fertile window, and ovulation day.

One-Tap Health Check

Easily monitor your heart rate, blood oxygen, stress level, and mood with a single tap on KOSPET TANK M4 for a comprehensive overview of your health status.

Keep Pace
with You for Longer

With up to 15 days of typical use, KOSPET TANK M4 is a smartwatch with long battery life meticulously built to perform in peak condition, so you never have to worry about power between charges while moving, training, or exploring.

14-15
Days up to

Typical Usage

Typical Use Battery Life

21-22
Hours up to

Continuous GPS Usage

Continuous GPS Usage

9-10
Days up to

Heavy Use

Heavy Use Battery Life

5-6
Days up to

AOD Mode

AOD Mode Battery Life

Power On,
Power Through

Lightweight, compact, and easy-to-store, our new power pocket can deliver more than one full charge for KOSPET TANK M4. Featuring a magnetic connector, the power pocket allows for simultaneous charging with the smartwatch.

*Note: The portable power pocket is sold separately.

850 mAh

>1 full charge

UP TO 50 Days

Battery Life

*Note: The portable power pocket is sold separately.

850 mAh

>1 full charge

50
up to Days

Battery Life

Get a brand new experience in

ApexmoveOS

Powered by

ApexmoveOS
Immerse yourself in the intuitive, interactive, and personalized user experience presented by our self-developed Apexmove OS, where you can tap into more health and fitness insights, manage routes and offline maps, and explore more possibilities in the Apexmove App.
With a vast array of customizable health, fitness, and exploration features at your fingertips, the Apexmove OS helps you stride towards a more balanced lifestyle — from fitness badges to seamless sync with third-party apps like Strava.

The user-centered Apexmove App provides in-depth health and fitness data recorded by KOSPET TANK M4, and enables you to customize training plans and feature cards, create your own routes or location points, and so much more.

Forge & Navigate Your Own Trail

Explore your favourite spots or navigate off the beaten path with KOSPET TANK M4 by importing GPX/KML files or creating routes in the Apexmove App.

Progress Within Your Reach

Customize settings around your goals and gain daily insights directly via the Apexmove App to track your health and fitness progress.

Enjoy the Beat Anytime, Anywhere

Add your favourite tracks and playlists to the Apexmove App and sync them straight to KOSPET TANK M4 — no phone needed.

Train Your Way Up

Personalize your training plans in the Apexmove App for optimal training routine and improve your effectiveness with a series of free online training courses.

Dial Up Your Style

Download watch faces that suit your style from hundreds of dazzling options (including paid watch faces) available in the Apexmove App.

Create
Your Unique Look

Head to the Apexmove App and customize your watch face for KOSPET TANK M4 by switching between different widgets, themes, and layouts. Tailor every detail to craft the perfect look.

Built-in

Information

Sporty

Futuristic

Vintage

Minimal

Fashionable

Editable Watch Dial

Customize your watch face by switching widgets for date, calories, battery level, and more.

Personalized Watch Dial

Upload your favourite image to the Apexmove App and set it as your watch face.

AOD Watch Dial

Customize and schedule your AOD watch face, or let it match the current theme.

Three Icon Theme Options

Choose from three distinct icon‑based UI themes that go with your style and vibe.

Customizable Shortcut Cards

Feel free to manage shortcut cards and access most-used features with a simple swipe.

Six Menu Layouts & Three Transition Animations

Select from six menu styles and three transition effects for your preferred system look and feel.

Eco-friendly Packaging
Inside and Out

At KOSPET, we strive to incorporate environmental sustainability into every piece of our product and contribute to a more sustainable future. KOSPET TANK M4 comes packaged in 100% environmentally-friendly materials, ranging from a recyclable nylon watch strap to printing and packaging free from mineral oils.

*Coral adoption certificate courtesy of Coral Guardian

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Free Shipping over $99

Warranty

1-2 Year Warranty

Money-back Guarantee

7-day Satisfaction Guaranteed

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