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COLMI M40 is an IP67 waterproof Smart watch


  • Display: 1.32 inch,
  • Screen resolution: 360*360 pixel.
  • Battery: Capacity 300 mAh, time 3~7 days.
  • Color: Black
  • Suitable for mobile phones with Android 4.4 or higher, or iOS 9.0 or higher.
  • Waterproof level: IP67 Waterproof,

Warranty: 7 days,


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  • Delivery Return


    Our delivery services are available within all over Bangladesh. Customers will receive a tracking number via email or phone once their order has been dispatched. They can track the status of their delivery by visiting nirvorshop.com Orders will be delivered within 48h. Delivery times may vary depending on the delivery location. A delivery fee of 70tk (inside dhaka), 150 taka (outside dhaka) will be applied to all orders. Free delivery is available for orders over 10,000tk.


    If a customer receives a damaged or incorrect item, they should contact our customer service team within 7 days for a replacement or refund.


    For any questions or concerns regarding delivery, customers can contact us. Phone: 01733310935
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The COLMI M40 Smartwatch is designed to accompany you on all your adventures, with its rugged construction and IP67 waterproof rating, making it resistant to water splashes, sweat, and rain. Packed with features and performance, the M40 smartwatch is your reliable partner for tracking your fitness, staying connected, and exploring the outdoors.


  • IP67 Waterproof Rating: The M40 smartwatch is rated IP67 waterproof, making it resistant to water splashes, sweat, and rain. It’s perfect for wearing during your workouts, outdoor activities, and water-based sports like swimming, without worrying about damage.
  • Comprehensive Health Tracking: The M40 smartwatch offers comprehensive health tracking features, including 24/7 heart rate monitoring, blood oxygen (SpO2) monitoring, sleep tracking, step counting, and more, helping you keep track of your health and fitness goals.
  • Multiple Exercise Modes: With a variety of exercise modes, including running, cycling, swimming, hiking, and more, the M40 smartwatch is your perfect workout companion. It provides detailed exercise data, including distance, calories burned, and more, helping you analyze your workouts in real-time.
  • Smart Notifications: Stay connected with your phone on your wrist with smart notifications for calls, messages, emails, social media alerts, and more. Never miss an important update or message with the M40 smartwatch.
  • Music Control: Control your music playback directly from your wrist with the music control feature, allowing you to play, pause, skip, or adjust the volume without having to reach for your phone, making it convenient for your workouts and outdoor activities.
  • Long Battery Life: The M40 smartwatch has a long battery life of up to 10 days on a single charge, ensuring that you can use it for extended periods without frequent recharging.
  • Customizable Watch Faces: Choose from a wide range of customizable watch faces to personalize your smartwatch and match your style and mood.
  • Built-in GPS: The M40 smartwatch comes with built-in GPS, allowing you to track your outdoor activities and routes without needing to carry your phone, making it ideal for outdoor adventures.
  • Sleep Tracking: The M40 smartwatch tracks your sleep patterns, providing insights into your sleep quality and helping you improve your sleep habits.
  • Compatibility: The M40 smartwatch is compatible with both iOS and Android devices, making it versatile and convenient for users of different smartphones.


  • Water Resistance: IP67 waterproof rating
  • Health Tracking: 24/7 heart rate monitoring, blood oxygen (SpO2) monitoring, sleep tracking, step counting, and more
  • Exercise Modes: Multiple exercise modes
  • Smart Notifications: Call, message, email, and social media alerts
  • Music Control: Music playback control
  • Battery Life: Up to 10 days on a single charge
  • Customizable Watch Faces: Wide range of customizable watch faces
  • Built-in GPS: Built-in GPS for outdoor tracking
  • Sleep Tracking: Sleep tracking
  • Compatibility: Compatible with iOS and Android devices

Conclusion: The COLMI M40 Smartwatch is your perfect companion for all adventures, with its IP67 waterproof rating, comprehensive health tracking features, long battery life, and built-in GPS. Stay connected, track your fitness, and explore the outdoors with confidence using the COLMI M40 smartwatch. Get yours now and elevate your smartwatch experience!

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