KOSPET Tank M4 Rugged Smartwatch, Full Stainless Steel, GPS & Offline Maps,10ATM Waterproof 45m Freediving, 50-Day Battery, Bluetooth Calls, 24/7 Heart Monitor, for Android & iOS
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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 1.96” AMOLED display, equipped with with a 3rd generation Corning Gorilla 9H double-layer glass.
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Offline Maps & Route Planning: The TANK M4 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.
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23 ApexMotion Sports & 160 Sport Modes: 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.
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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.
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Extra-Large Battery Life: KOSPET TANK M4 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.
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Health Tracking & Multifunctional: This men’s smart watch with a 4PD sensor capturing richer optical signals, fitness watch tracks SpO₂, sleep, stress, emotions, and menstrual cycles in real time to support your lifestyle. Built-in Walkie-talkie to instantly communicate with each other via a simple touch-and-hold.
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Smart Coaching Powered by Apexmove: The Apexmove app and OS are designed in-house exclusively for KOSPET, ensuring a perfectly tailored experience. Enjoy unique features like fitness badges alongside seamless synchronization with your favorite third-party apps like Strava.
Specifications:
General:
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Model: KOSPET TANK M4
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Storage: 32 GB ROM
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Memory: 16 MB SRAM
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Colors: Black, Silver
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Body Material: Stainless Steel (SGS Certified Inox 360)
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Case Back Material: Stainless Steel
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Dimensions: 50.5 × 42.5 × 13 mm
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Weight (without strap): 80 g
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Strap Material: Liquid Silicone
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Strap Size: 22 mm (Quick Release)
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Wrist Fit: 150 mm – 240 mm
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Buttons: 4
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Built-in Speaker/Microphone: Yes
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Water Resistance: 10 ATM & IP69K
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Dive Modes: Freediving, Scuba, Gauge
Display:
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Type: 1.96″ AMOLED
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Touchscreen: Corning® Gorilla® Glass 3
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Resolution: 410 × 502 pixels
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Pixel Density (PPI): 331
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Peak Brightness: 1000 nits
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Features: Auto-brightness, Raise to Wake
Battery & Charging:
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Capacity: 500 mAh
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Type: Pure Cobalt Battery
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Charging Method: Magnetic Charging Dock
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Charging Time: Approximately 2 Hours
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Battery Life (Typical Use): 14-15 Days
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Battery Life (Heavy Use): 9-10 Days
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Battery Life (Always-On Display): 5-6 Days
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Battery Life (Continuous GPS): 21-22 Hours
Sensors:
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Health: VC9213-4PD Sensor
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Movement: 6-axis Gyroscope
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Positioning: Dual-band GNSS (GPS, Galileo, GLONASS, BeiDou, QZSS, NavIC)
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Environmental: Geomagnetic Sensor, Barometric Altimeter, Ambient Light Sensor, Temperature Sensor
Health & Wellness Monitoring:
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24/7 Automatic Monitoring: Heart Rate, Blood Oxygen (SpO₂), Stress Level, Mood, Sleep Stages (including REM)
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One-tap Measurement: Heart Rate, Blood Oxygen, Stress, Mood
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Sleep Tracking: Sleep Stages, Naps, Sleep Schedule
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Alerts: Abnormally High & Low Heart Rate, Low Blood Oxygen
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Other Features: Menstrual Cycle Tracking, Breathing Exercise
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Note: Does not measure Blood Pressure.
Sports & Training Features:
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Sports Modes: 23 ApexMotion Sports + 160 Freestyle Training Modes
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Specialized Dive Modes: Freedive, Scuba, Gauge
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Running Features: Distance, Average Pace, Cadence, Real-time Navigation, Heart Rate Zones
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Swimming Features: SWOLF, Average Pace, Stroke Recognition, Stroke Rate, Lap Count
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Activity Tracking: 24-hour tracking for Calories, Steps, and Distance
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Training Tools: Personalized Training Plans, Smart Recognition
Outdoor & Smart Features:
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Navigation: GPS Positioning, Offline Maps, Real-time Navigation, Route Import/Export, Route Back, Compass
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Outdoor Tools: Walkie-Talkie, Flashlight, Barometric Altimeter, Moon Phase, Tides, Sunrise & Sunset Times, Extreme Weather Alerts
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Connectivity: Bluetooth 5.3
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Notifications: App, SMS, and Phone Call alerts
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Device Control: Music Control & Storage, Camera Control, Find Phone
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Daily Tools: Alarm Clock, Timer, Stopwatch, Calculator, Calendar, Weather, World Clock, Voice Assistant
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Smart Features: Emergency SOS, Sedentary Reminder, Do Not Disturb, Water Ejection, Screen Lock & Password
Compatibility & Software:
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Compatible Operating Systems: Android 7.0 and above, iOS 14.0 and above
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Companion Application: Apexmove App (Available on Google Play and App Store)
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Third-Party App Compatibility: Syncs with Apple Health & Strava
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Supported Languages: 37 Languages






















