TOZO S3 Smartwatch Review: Is This Budget Bluetooth Calling Watch Worth Buying?

Thinking about buying the TOZO S3 Smartwatch? Discover its Bluetooth calling, fitness tracking, battery life, display, price, pros, cons, and whether it's worth your money.

Review
31. Jul 2026
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The TOZO S3 Smartwatch is designed for both Android and iPhone users looking for an affordable smartwatch packed with everyday features. It combines Bluetooth calling, health tracking, sleep monitoring, over 100 sports modes, weather updates, music controls, and smartphone notifications into a stylish square-shaped design.

Unlike many entry-level smartwatches, the TOZO S3 also offers impressive battery life and an IP68 waterproof rating, making it suitable for workouts, outdoor activities, and daily use.

With its attractive price point, it competes directly with many budget fitness watches while providing features usually found in more expensive models.

TOZO S3 Smartwatch Features

Large 1.83-inch HD Display

The smartwatch features a 1.83-inch HD full-touch display with a resolution of 240 × 284 pixels.

Highlights include:

  • Bright and colorful display
  • Smooth touch response
  • Easy-to-read text
  • Large icons
  • Full-screen touch navigation

Multiple customizable watch faces allow users to personalize the appearance according to their style.

Although it isn't AMOLED, the LCD panel looks vibrant enough for everyday use.

Bluetooth Calling Support

TOZO S3 Smartwatch

One of the biggest highlights of the TOZO S3 is its built-in microphone and speaker.

Once paired with your smartphone through Bluetooth, you can:

  • Answer incoming calls
  • Make outgoing calls
  • Speak directly through the watch
  • Reject unwanted calls

The call quality is surprisingly clear considering the price. It's especially useful when your phone is charging, in another room, or stored in your backpack while you're working out.

The watch also supports quick access to up to 10 favorite contacts for faster calling.

Bluetooth Notifications

The TOZO S3 keeps you connected without constantly reaching for your phone.

It supports notifications for:

  • SMS
  • Phone calls
  • Social media apps
  • Messaging applications
  • Calendar alerts

You can read notifications directly on the watch, making it convenient during meetings, workouts, or driving.

Sleep Monitoring

Sleep tracking is another useful feature.

The watch automatically records your sleeping patterns and provides insights such as:

  • Sleep duration
  • Sleep quality
  • Sleep stages
  • Daily sleep trends

While it isn't a medical device, it offers useful information for users wanting to improve their sleep habits.

Professional Health Monitoring

The TOZO S3 includes several wellness tracking tools, including:

  • Heart rate monitoring (non-medical)
  • Daily activity tracking
  • Calories burned
  • Step counter
  • Distance tracking
  • Active minutes

These metrics help users maintain a healthier lifestyle by monitoring their daily activities.

100+ Sports Modes

Fitness enthusiasts will appreciate the support for over 100 sports modes, covering activities such as:

  • Walking
  • Running
  • Cycling
  • Hiking
  • Yoga
  • Strength training
  • Indoor workouts
  • Outdoor sports

The smartwatch automatically records workout data to help users monitor their progress.

Music & Weather Control

When connected through the TOZO Health app, users can:

  • Control music playback
  • View local weather forecasts
  • Find their smartphone
  • Access additional smart functions

These everyday conveniences make the watch much more practical than a basic fitness tracker.

TOZO Health App

The smartwatch pairs with the TOZO Health app, available for both Android and iOS devices.

The app offers:

  • Easy device setup
  • Workout history
  • Health reports
  • Sleep statistics
  • Watch face customization
  • Firmware updates

The interface is simple and beginner-friendly.

Long Battery Life

TOZO S3 Smartwatch

Battery performance is one of the strongest areas of the TOZO S3.

The 300mAh battery provides approximately:

  • Up to 10 days in automatic heart-rate monitoring mode
  • Around 7 days with continuous monitoring enabled

For most users, charging once every week is more than enough.

IP68 Waterproof Design

The TOZO S3 comes with an IP68 waterproof rating, making it resistant to:

  • Rain
  • Sweat
  • Hand washing
  • Dust
  • Everyday splashes

This makes it suitable for workouts and daily wear without constantly worrying about water exposure.

TOZO S3 Smartwatch Price in the US

The TOZO S3 Smartwatch is currently available in the United States for $29.99. Amazon frequently offers limited-time discounts, making it one of the best value smartwatches in the budget category.

Get Offer - Buy on Amazon

At under $30, it provides significantly more features than many fitness bands in the same price range.

TOZO S3 Smartwatch Review

After evaluating its specifications and real-world user experiences, the TOZO S3 leaves a surprisingly positive impression.

The first thing you'll notice is the comfortable silicone strap, which feels soft enough for all-day wear. The square display is bright and responsive, making navigation simple even for first-time smartwatch users.

Bluetooth calling works better than expected for a budget smartwatch. Calls sound clear as long as you're within Bluetooth range of your smartphone. Reading notifications directly from your wrist is also convenient and reduces the need to constantly check your phone.

The battery life is another standout feature. Many users report getting around a week or more on a single charge, making it dependable for everyday use.

Health tracking features such as step counting, heart rate monitoring, calorie tracking, and sleep monitoring provide useful insights for casual fitness users. While these measurements shouldn't replace medical equipment, they are more than sufficient for daily wellness tracking.

The TOZO Health app is clean, responsive, and easy to navigate. Pairing is straightforward, and syncing health data happens quickly.

One particularly impressive aspect is long-term reliability. Many owners report using the original TOZO S3 for over a year before replacing it—not because it stopped working, but simply due to normal cosmetic wear. The newer version also appears to offer even better battery life while maintaining the same easy-to-use app experience.

Of course, there are compromises. The display is LCD rather than AMOLED, GPS depends on your connected smartphone, and advanced health features found on premium smartwatches are absent. However, considering the extremely affordable price, these omissions are understandable.

Overall, the TOZO S3 delivers excellent value for users who want smart features without spending hundreds of dollars.

TOZO S3 Smartwatch Pros and Cons

Pros

  • Affordable price under $30
  • Clear Bluetooth calling support
  • Large 1.83-inch HD display
  • Comfortable silicone strap
  • Long-lasting battery life
  • IP68 waterproof design
  • 100+ sports modes
  • Easy-to-use TOZO Health app
  • Works with Android and iPhone

Cons

  • No built-in GPS
  • LCD display instead of AMOLED
  • Requires a connected phone for some features
  • No NFC payment support 

Should You Buy TOZO S3 Smartwatch?

The TOZO S3 is an excellent choice if you're looking for an affordable smartwatch that covers all the essentials.

You should consider buying it if you want:

  • Bluetooth calling without spending a fortune
  • Daily fitness and health tracking
  • Long battery life
  • Comfortable everyday wear
  • Large easy-to-read display
  • Reliable notifications
  • A smartwatch under $30

However, if you require built-in GPS, ECG monitoring, advanced health sensors, app stores, or premium smartwatch features, you may want to consider higher-end alternatives.

Final Verdict

The TOZO S3 Smartwatch proves that you don't need to spend hundreds of dollars to enjoy useful smartwatch features. For around $29.99, it offers Bluetooth calling, a bright 1.83-inch display, solid battery life, sleep and activity tracking, over 100 sports modes, and dependable everyday performance.

Its comfortable design, user-friendly TOZO Health app, and reliable Bluetooth connectivity make it an outstanding value for students, casual fitness enthusiasts, and anyone looking for an inexpensive smartwatch for daily use.

While it doesn't compete with premium smartwatches in terms of advanced features, it delivers excellent functionality where it matters most. If your budget is under $30 and you want a dependable smartwatch for calls, notifications, and fitness tracking, the TOZO S3 is one of the best options currently available.

FAQs

Q1. Is the TOZO S3 Smartwatch compatible with iPhone and Android?

Yes. The TOZO S3 works with both Android and iPhone devices through the free TOZO Health app, allowing you to receive notifications, manage health data, and use smart features.

Q2. Can I answer phone calls using the TOZO S3 Smartwatch?

Yes. The watch features built-in Bluetooth calling with a microphone and speaker, letting you answer and make calls when connected to your smartphone.

Q3. How long does the TOZO S3 battery last?

The TOZO S3 can last up to 10 days in automatic heart-rate monitoring mode and around 7 days with continuous monitoring, depending on usage.

Q4. Is the TOZO S3 Smartwatch waterproof?

Yes. It has an IP68 waterproof rating, making it resistant to rain, sweat, splashes, and everyday water exposure, making it suitable for workouts and daily wear.

Q5. Is the TOZO S3 Smartwatch worth buying?

If you're looking for an affordable smartwatch under $30 with Bluetooth calling, fitness tracking, sleep monitoring, and long battery life, the TOZO S3 offers excellent value for money.

Via: (Amazon)

Disclaimer - We strive to keep the information on this page accurate and up to date, but we cannot guarantee that it is 100% error-free. Some content may have been created with the assistance of AI tools, including ChatGPT. Product reviews are based on publicly available specifications, features, and our analysis, while some product images may be sourced from Amazon or the respective brand for reference purposes. We recommend verifying product details, pricing, and availability on the official manufacturer's or retailer's website before making a purchase. We are not responsible for any products, services, or purchasing decisions based on the information provided on this page.

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Rishabh Sinha
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