Kospet TANK M4 Smartwatch Sliver

The KOSPET TANK M4 is built for beginner divers who want a large, ultra clear square screen to monitor key dive info underwater. With a 10ATM rugged build made to handle pressure and saltwater conditions, it stays dependable in demanding environments. Three dedicated dive modes and high precision GPS help you dive with more confidence and record each session with less effort.

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

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.

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.

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.

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.

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.

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.

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.

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.

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.

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