TOZO - S4 Smartwatch for Men Women,1.78" AMOLED Screen,Health Tracker,7-Day Battery,100+ Sport Mode,Call/Answer,iOS/Android - Black - (2026)
Customers are saying
Customers commend the excellent battery life of the product. They find its battery performance to be great.
Color
Black1.78" Ultra-Clear AMOLED HD Display
Featuring a vibrant 1.78" AMOLED screen with 368x448 resolution, the display offers 25% faster response, wider color gamut, higher contrast, and lower power consumption. Experience crystal-clear visuals with a broader viewing range, making it easy to read notifications, track workouts, and navigate menus even under bright sunlight.
Bluetooth Calling & Smart Notifications
Stay connected directly from your wrist. Make and receive calls via Bluetooth without reaching for your phone. Get instant vibration alerts for messages, call logs, and app notifications—keeping you informed during workouts, meetings, or daily activities while your phone stays in your pocket or bag.
100+ Sports Modes & IP68 Waterproof Design
Track over 100 activities including running, cycling, yoga, and more. The watch records heart rate, calories, distance, and performance insights in real time. With IP68 waterproof rating, it withstands sweat, rain, and swimming—making it perfect for intense workouts and outdoor adventures without damage.
24/7 Health & Sleep Monitoring with REM Detection
Monitor your well-being continuously with all-day heart rate and real-time stress tracking. Advanced sleep analysis detects deep, light, and REM sleep stages to provide comprehensive insights into your sleep quality, helping you adjust routines for more restful nights and better overall health.
7-Day Battery with 30-Day Standby & Fast Charging
Enjoy up to 7 days of typical use on a single charge and 30 days in standby mode, powered by a 300mAh battery. Fully recharge in just 2 hours via magnetic charging. Compatible with iOS 11.0+ and Android 9.0+, it also offers weather updates, music control, and customizable watch faces for daily convenience.
- Screen Size45 millimetersTouch ScreenYesOperating System CompatibilityAndroidOperating SystemAndroidApp CompatibleYesBuilt-in Storage0.125 gigabytes
Reviews
Rating 4.2 out of 5 stars with 5 reviews
- Battery Life (4)
Customer Images
The vast majority of our reviews come from verified purchases. Reviews from customers may include My Best Buy members, employees, and Tech Insider Network members (as tagged). Select reviewers may receive discounted products, promotional considerations or entries into drawings for honest, helpful reviews.
Compare similar products

Experience clarity and connection with the TOZO S4 Smartwatch. It features a vibrant 1.78" AMOLED display with 368x448 resolution for sharp visuals and wide viewing angles. Stay in touch using Bluetooth calling and notifications, so you never miss important messages or calls.Monitor your wellness with 24/7 heart rate tracking, stress detection, and advanced sleep analysis that identifies deep, light, and REM stages. Track over 100 sports modes like running, cycling, and yoga, with detailed metrics to help you improve performance. The watch is IP68 waterproof for worry-free use in rain or during workouts.Enjoy up to 7 days of battery life on a single charge, with a 30-day standby mode for extended use. Compatible with iOS 11.0+ and Android 9.0+, it offers convenient features like weather forecasts, music control, and customizable watch faces. Sleek and durable, the TOZO S4 is your stylish companion for an active, connected lifestyle.

The Active 2 is a smart watch designed for fashion-conscious, health-focused people who value style and functionality. It features a 1.32" bright display in a sleek 44mm stainless steel case, offering unmatched clarity even under bright sunlight. With BioTracker technology for precise heart rate and sleep tracking, 160+ workout modes including HYROX Race, and up to 10 days of battery life, it’s your ultimate fitness companion. Enjoy free offline maps with turn-by-turn directions, Zepp Flow AI voice control, and detailed insights via the Zepp App—perfect for an active, stylish lifestyle.

Stay on top of your health and daily activities with the Supersonic® feature-packed XPLORE EDGE Bluetooth® Smartwatch! Equipped with a vivid 2-in. touch screen display, this watch keeps you informed and in control wherever you go. Track your heart rate, blood pressure, blood oxygen levels, steps, and calories burned while benefiting from sleep monitoring, breathing training, a compass, barometer, and altitude tracker ideal for active lifestyles. Stay connected with call and message reminders, phone book synchronization, voice assistance, and even music control at your fingertips. Plus, you can shake your wrist to take a picture and never miss a moment! Designed for convenience, this smartwatch offers information reminders, sedentary alerts, an alarm clock, a stopwatch, and weather updates keeping you organized throughout the day. The built-in LED flashlight adds extra functionality, while its IP67 water resistance lets you take it anywhere, rain or shine. With a long-lasting 600-mAh battery, enjoy up to 7 days of use on a single charge and 20 days on standby. Whether you're tracking fitness goals or managing daily tasks, this smartwatch is your ideal companion for a smarter, healthier life! Please note this product is not a medical device and is not intended to diagnose, treat, cure, or prevent any disease.

Meet the TOZO S8 Smartwatch, your ultimate daily wellness companion. It boasts a stunning AMOLED display that’s vivid even under direct sunlight. Stay active with 100+ sports modes that track workouts, heart rate, and calories automatically, and view progress reports in the app.Never miss a call or message with smart Bluetooth calling and vibration alerts. Keep a close eye on your well-being with all-day heart rate, blood oxygen, and stress tracking. Our advanced sleep monitoring analyzes deep, light, and awake stages to help you improve rest quality.Designed for life on the go, the S8 offers 3ATM water resistance for worry-free wear. Enjoy up to 10 days of battery life on a single charge. Daily tools like hydration reminders, weather forecasts, music control, and a phone finder keep you organized. Lightweight and sleek, it’s the smartwatch that fits seamlessly into your routine.
| Pros for TOZO - S4 Smartwatch for Men Women,1.78" AMOLED Screen,Health Tracker,7-Day Battery,100+ Sport Mode,Call/Answer,iOS/Android - Black - (2026) | |||
|---|---|---|---|
| Battery Life | Battery Life, Overall Performance, Comfort, Design, Health Tracking | There were no pros for this product— | Battery Life |
















































