10 Best Smart Watches Under 100 2025 in the United States

The Garmin Venu 3S is an attractive option for those seeking a feature-packed smartwatch under $100. Its 1.2-inch AMOLED touchscreen display is bright and vibrant, making it easy to read in various lighting conditions. One of its standout features is the impressive battery life, lasting up to 10 days in smartwatch mode, which is quite beneficial for those who prefer not to charge their device frequently. Fitness enthusiasts will appreciate the comprehensive fitness tracking capabilities, including over 30 built-in sports apps, heart rate monitoring, stress tracking, and sleep coaching with personalized insights and tips.

The Body Battery energy monitoring feature is an added bonus, helping users understand their energy levels throughout the day based on various factors like sleep and workouts. The watch is compatible with both Android and iOS devices, allowing a wide range of users to connect their smartphones. It also offers convenient smart features such as receiving notifications, making and taking phone calls, and using a voice assistant. The Garmin Venu 3S is water-resistant, making it suitable for activities like swimming.

On the design front, it has a stylish soft gold stainless steel bezel and a comfortable silicone band, ensuring a good fit throughout the day. However, some might find the 41mm case size a bit small, depending on their wrist size. Additionally, while it has many advanced features, the user interface may take a little time to get used to, especially for those new to smartwatches. The Garmin Venu 3S offers a balanced mix of style, functionality, and affordability, making it a solid choice for budget-conscious buyers who don’t want to compromise on features.

The Amazfit T-Rex 3 stands out in the under-$100 smartwatch category with its rugged design and extensive features. The 1.5-inch AMOLED display offers exceptional brightness (up to 2,000 nits), ensuring readability in all lighting conditions. It includes a night mode and glove mode for added convenience. With a battery life of up to 27 days under typical use, it excels in longevity. The watch supports over 170 fitness and sport modes, making it suitable for a variety of physical activities, along with AI-generated training plans that provide real-time performance updates.

Compatibility with both Android and iPhone is covered, and the built-in dual-band GPS paired with free downloadable maps and satellite system support ensures accurate tracking of outdoor adventures. It is also water-resistant up to 328 feet, perfect for swimming or freediving up to 147 feet. The rugged design, with a military-grade body and stainless steel bezel, can withstand extreme temperatures, adding durability.

However, the large and rugged build may not appeal to those seeking a sleeker, more stylish smartwatch. Additionally, while voice control and notifications functions are robust, they may require some getting used to for seamless use. The absence of a USB Type-C cable in the box may be a minor inconvenience. Despite these minor drawbacks, the Amazfit T-Rex 3 is a comprehensive and reliable option for fitness enthusiasts and adventure seekers looking for an affordable, feature-rich smartwatch.

The Fitpolo Smart Watch offers a large and vibrant 1.8-inch HD touchscreen, which makes it easy to view your stats and notifications clearly. It stands out with over 102 customizable watch faces, allowing some personalization. The battery life is solid for this price range, lasting about 7 days with regular use and up to 30 days on standby, which means you won't need to recharge frequently. Fitness tracking is comprehensive, covering heart rate, blood oxygen, sleep, stress, and 105 sports modes, making it a good match for users who want detailed health and activity monitoring.

Compatibility is broad, working smoothly with both Android (6.0+) and iOS (9.0+) devices, so it should connect with most smartphones. It also supports Bluetooth calls and includes Alexa voice control, adding convenience for hands-free use, though it cannot send text messages from the watch itself and works within a limited Bluetooth range (8-10 meters). The watch is IP68 waterproof, so it's safe from sweat, rain, and brief water exposure but not recommended for heavy swimming or diving. Build quality feels decent for its price, with a lightweight design and a band that fits most wrist sizes, plus the company offers a 3-year guarantee and responsive support.

Notifications cover all major apps, helping you stay connected without pulling out your phone. Some drawbacks include that the call and Alexa features might be less reliable compared to more expensive watches, and the lack of onboard GPS means you rely on your phone for location tracking. Also, the touchscreen might occasionally be less responsive compared to higher-end models. This smartwatch is well suited for users looking for an affordable, feature-rich fitness tracker with smart features, but it may not satisfy those wanting more advanced app support or rugged outdoor capabilities.