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| Basic Information | ||
| Display | 1.96", AMOLED, 410 × 502, 331 PPI | |
| Battery | Capacity: 500mAh Type: Pure Cobalt Battery Charging Method: Magnetic Charging Cable Theoretical Charging Duration: Approx. 2 Hours Typical Usage Life: 14-15 Days Heavy Usage Life: 9-10 Days AOD Mode Life: 5-6 Days GPS Workout Life: 21-22 Hours |
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| Connectivity | Bluetooth 5.3 | |
| Material | Bottom Case Material: Stainless Steel Cover Glass Material: Corning Gorilla Glass 3 Body Material: Stainless Steel Strap Material: Silicone |
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| OS | Android 7.0 and above, iOS 14.0 and above | |
| Sensor | Heart Rate Sensor: VC9213-4PD sensor (supports Blood-oxygen) G-Sensor: 6-axis Gyroscope Sensor GPS Positioning: Dual-band 6 Satellite Positioning Systems |
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| Supported Apps/ Software | KOSPET FIT | |
| SpecialFeatures | 5 ATM & IP69K Water-Resistance 4 Buttons Bluetooth Calls Sports Modes: 23 ApexMotion Sports Modes & 160 Freestyle Training Modes Smart Recognition: 6 Sports Movements (Walking, Running, Cycling, Elliptical Trainer, Rowing Machine, Still) SWOLF Test 24-Hour Monitoring Heart Rate, Blood Oxygen, Stress Level, Mood Manual Measurements Heart Rate, Blood Oxygen, Stress Level, Mood, One-tap Measurement (Heart rate, Blood oxygen, Stress level, Mood) Sleep Tracking Sleep Stages (including REM), Naps, Sleep Schedule Health Alerts Abnormally High & Low Heart Rate, Low Blood Oxygen Additional Features Menstrual Cycle Tracking, Breathing Exercise |
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| Others | Processor: ATS3089 Memory: 16MB SRAM + 32GB ROM |
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| Exterior | ||
| Dimension | 50.5 × 42.5 × 13mm Width: 22mm Wrist Size Range: 150mm-240mm |
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| Weight | 80g (without Strap) | |
| Warranty Information | ||
| Warranty | 1 Year | |
The KOSPET Tank M4 is a rugged, flagship smartwatch designed for extreme outdoor enthusiasts and professional divers. Released in late 2025, it distinguishes itself through a blend of military-grade durability and high-end navigation features.
The device features an Inox 360 stainless steel unibody, providing a substantial, premium feel that is SGS-certified to meet MIL-STD-810H standards. This allows it to withstand temperatures ranging from -50°C to 70°C. The front is dominated by a vibrant 1.96-inch AMOLED display with a resolution of 410 × 502 pixels. With a peak brightness of 1,000 nits and an integrated ambient light sensor for auto-brightness, the screen remains legible under direct sunlight.
A standout feature is its 10 ATM and IP69K water resistance, making it "dive-ready" for depths up to 45 meters. It includes dedicated modes for Scuba, Freediving, and Gauge diving, tracking metrics like NDL (No-Decompression Limit), ascent rates, and water temperature. For terrestrial explorers, the Dual-Band Six-System GNSS provides precise positioning. Crucially, it supports offline maps and route imports (GPX/KML), allowing for phone-free navigation in remote areas.
The watch utilizes an advanced 4PD optical sensor for 24/7 monitoring of heart rate, SpO₂, stress, and sleep stages. It supports over 180 sports modes, including smart recognition for six common activities. Data syncs seamlessly via the Apexmove app, which integrates with third-party platforms like Strava and Apple Health.
Equipped with a 500mAh pure cobalt battery, the Tank M4 offers impressive endurance:
Typical Use: 14–15 days
Heavy Use: 9–10 days
Continuous GPS: 21–22 hours
The watch also features Bluetooth 5.3 for calling, built-in music storage (32GB ROM), and a unique walkie-talkie function for instant communication during group expeditions.
Get specific details about this product from customers who own it.