Smartwatches under $400 now offer many features that once appeared mainly on expensive models. Buyers can find bright displays, GPS, health tracking, workout tools, notifications, calls, and useful smart features within this price range. Several current models also offer strong battery life for people who do not want to charge their watch every night.
This guide covers 6 best smart watches under $400 for different users and priorities. Apple Watch models can suit iPhone owners, while Samsung and Google watches provide strong options for Android users. Garmin models can appeal to people who care more about fitness and battery life, while affordable brands such as CMF offer many useful features at a much lower price.
Phone compatibility, battery life, display quality, GPS accuracy, health tracking, water resistance, and available apps all deserve attention before you buy. Your smartphone should also guide your choice because some smartwatch features depend heavily on the phone you use.
6 Best Smart Watches Under 400
| Image | Title | Best For | Link |
|---|---|---|---|
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ICOMTOFIT Fitness Tracker Smart Watch | The icomtofit smart watch for women and men, fitness tracker with heart rate, spo2, and waterpr… more | View on Amazon |
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Smart Watch Bluetooth Calling Fitness Tracker | The smart watch with 1.83″ hd touch screen, bluetooth calling, 140+ sports modes and fitness tr… more | View on Amazon |
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Smart Watch Alexa Bluetooth Fitness Tracker | The smart watch with built-in alexa, bluetooth calling, 1.83″ display, health monitoring and wa… more | View on Amazon |
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ICOMTOFIT Smart Watch Fitness Tracker | The icomtofit smart watch, waterproof fitness tracker with heart rate, spo2 monitor, compatible… more | View on Amazon |
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aeac AMOLED Women’s Smart Watch | The aeac amoled smart watch for women, ultra-clear display with health monitoring and 110+ spor… more | View on Amazon |
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Smart Watch Bluetooth Calling Activity Tracker | The smart watch with 1.83″ hd touchscreen, bluetooth calling, 130+ sports modes and waterproof… more | View on Amazon |
Detailed Reviews
This section provides a deep dive into the top-rated smart watches under 400. We examine the core health metrics, build quality, and smart connectivity features that distinguish these models, helping you identify which wearable best aligns with your daily lifestyle and fitness objectives.
| SPORTS MODES | 100+ exercise modes |
| MONITORING | Heart rate, SpO2, stress, and sleep |
| WATERPROOF | IP67 rating |
| BATTERY | 5-7 days normal use |
The ICOMTOFIT Smart Watch is a robust choice for users looking for comprehensive tracking features at an accessible price point. Its extensive library of 100+ sports modes ensures that whether you are into casual walking or more intense interval training, your activity data is captured accurately.
Beyond fitness, the device excels in smart connectivity. The inclusion of a built-in speaker and microphone for Bluetooth calling, paired with an HD touch screen, makes managing notifications and phone calls incredibly convenient during your busy day.
- 100+ sports modes for versatile tracking
- Clear HD touch screen interface
- Integrated Bluetooth calling functionality
- Solid health monitoring including SpO2
- IP67 rating is standard rather than elite
- Not intended for medical diagnostic purposes
Individuals who want a reliable, daily-use fitness companion that balances essential health tracking with practical communication features.
| DISPLAY | 1.83-inch HD IPS |
| SPORTS MODES | 140+ modes |
| WATERPROOF | IP68 rating |
| BATTERY | 350mAh, 5-7 days use |
This smart watch stands out for its impressive 1.83-inch high-definition IPS display, which provides sharp visuals and an intuitive user interface. With 140+ sports modes, it caters to specialized athletic needs, making it a powerful tool for those who track specific workouts ranging from swimming to yoga.
The IP68 water resistance rating ensures peace of mind during intense exercise or rainy days, while the upgraded battery offers an excellent balance between performance and longevity. Users will also appreciate the seamless Bluetooth calling capabilities, which allow for quick interaction without reaching for their smartphones.
- Large, vibrant 1.83-inch IPS display
- Extensive 140+ sports tracking library
- High-grade IP68 waterproof protection
- Convenient Bluetooth calling and notification sync
- No ability to reply to text messages
- Battery life varies significantly based on settings
Fitness enthusiasts who require a wide variety of exercise modes and a durable design that can withstand sweat and water exposure.
| SMART FEATURES | Built-in Alexa, Bluetooth calling |
| MONITORING | 24/7 Heart rate, SpO2, stress |
| WEIGHT | 38 grams |
| WATERPROOF | IP68 rating |
The key differentiator for this model is its built-in Alexa integration, offering hands-free control over alarms, music, and weather updates. Weighing only 38g, this watch is designed for all-day comfort, making it an excellent choice for users who want a lightweight wearable that doesn’t sacrifice performance.
Beyond the smart assistant, the watch provides a comprehensive health tracking suite, including continuous monitoring for heart rate, stress, and sleep. With its 1.83-inch HD display and durable build, it functions as a highly capable personal assistant for busy professionals.
- Built-in Alexa for voice control
- Exceptionally lightweight design
- Full-suite 24/7 health monitoring
- Reliable battery life up to 7 days
- Limited smart home control range
- Not recommended for diving or hot saunas
Users who prioritize voice assistant functionality and a comfortable, lightweight feel for continuous wear.
| SPECIAL FEATURES | Menstrual cycle tracking |
| DISPLAY | 1.83-inch HD touch screen |
| CALLING | Bluetooth calling via wrist |
| BATTERY | 5-7 days regular use |
This ICOMTOFIT model focuses on well-rounded health and lifestyle management. With features like menstrual cycle tracking and constant SpO2 monitoring, it serves as a personalized health reference tool for daily wellness.
The high-definition display is designed for readability across various lighting environments, ensuring you can quickly check your health stats or incoming notifications while on the go. Its durable, waterproof build keeps it operational during your daily workouts, making it a reliable and versatile choice.
- Includes dedicated female health tracking
- Vivid HD touch display with adjustable brightness
- Easy-to-use Bluetooth calling functionality
- Solid waterproof construction
- Charging cable is proprietary magnetic style
- Design might be too large for some smaller wrists
Those looking for a smartwatch that specifically includes health features for tracking monthly cycles alongside general fitness metrics.
aeac AMOLED Smart Watch for Women, Ultra-Clear Display with Health Monitoring and 110+ Sports Modes
| DISPLAY | 1.32-inch AMOLED |
| SPORTS MODES | 110+ modes |
| BATTERY | Up to 10 days |
| WATERPROOF | 3ATM rating |
The AEAC AMOLED Smart Watch brings a premium visual experience to the table. Its 1.32-inch AMOLED screen offers vivid, deep colors and incredible sharpness, which is a rare find in this price category. It is a stunning device that blends aesthetic elegance with functional fitness metrics.
With a 3ATM waterproof rating and up to 10 days of battery life, this watch is built to last through intense activities and busy work weeks alike. The inclusion of an AI voice assistant provides added convenience for hands-free operations while you are on the move.
- Stunning 1.32-inch AMOLED display
- Excellent 10-day battery life
- AI voice assistant integration
- Elegant and compact design
- 3ATM rating is suitable for water, but not swimming deep
- Less sports modes than some competition
Style-conscious individuals who want a premium-looking AMOLED screen paired with long battery life.
| DISPLAY | 1.83-inch HD touch screen |
| SPORTS MODES | 130+ modes |
| CALLING | Built-in Bluetooth calling |
| WATERPROOF | IP68 rating |
This smart watch offers a fantastic blend of high-end features and durable design. The 1.83-inch HD touchscreen is bright and responsive, ensuring that your notifications and workout stats are always clear and easy to navigate throughout your day.
With 130+ sports modes and an IP68 waterproof rating, this device is ready to handle almost any workout, from gym sessions to outdoor runs. The integrated Bluetooth calling feature provides a smooth experience for users who need to manage their communications without relying constantly on their smartphones.
- 130+ sports modes cover most training types
- Clear, responsive HD touchscreen
- Durable IP68 waterproof protection
- Convenient Bluetooth calling feature
- Proprietary software interface
- Notifications are alerts only, not actionable
Active individuals who want a highly versatile fitness tracker that handles daily notifications and calls effectively.
Complete buying guide for Best Smart Watches Under 400
Health and Fitness Tracking Features
When looking for a smart watch in this range, prioritize models that offer 24/7 heart rate monitoring and blood oxygen (SpO2) tracking. These baseline metrics are essential for understanding your overall physical condition.
Waterproofing and Build Quality
Look for IP68 or 3ATM ratings to ensure your device can handle the demands of your specific workouts, including sweat, rain, or swimming.
Display Quality
AMOLED displays provide superior brightness and color accuracy compared to traditional LCD screens, making them easier to read in direct sunlight.
Frequently Asked Questions
Do these watches work with both Android and iPhone?
Yes, most modern smart watches under 400 are designed for broad compatibility with both major smartphone platforms, though specific app features may vary slightly.
Can I reply to texts on these smart watches?
Generally, most watches at this price point allow you to view notifications, but direct text reply functionality is limited or unavailable on many models.
How long should I expect the battery to last?
Most of the devices in this roundup offer between 5 to 10 days of battery life under normal daily use, depending on your screen settings and feature usage.
Conclusion
Choosing a smart watch under 400 doesn’t mean compromising on quality or features. Whether you prioritize advanced health metrics, voice assistant integration, or a stunning display, the options listed above offer excellent performance and reliability for everyday use.