TOZO - S4 Smartwatch, 1.78" Clear AMOLED Screen, 7-Day Battery, 100+ Sport Modes, Call/Answer, Health/Sleep, iOS/Android, IP68 - Black - (2026)
TOZO - S4 Smartwatch, 1.78" Clear AMOLED Screen, 7-Day Battery, 100+ Sport Modes, Call/Answer, Health/Sleep, iOS/Android, IP68 - Black - (2026)
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Specifications
- Screen Size45 millimetersTouch ScreenYesOperating System CompatibilityAndroidOperating SystemAndroidApp CompatibleYesBuilt-in Storage0.125 gigabytes
- Key Specs
- Screen Size: 45 millimeters (Size of the screen, measured diagonally from corner to corner.)
- Touch Screen: true (Touch-screen devices make navigating more intuitive. Using a touch-screen display, you can do things such as tap to select, hold and drag to move items, swipe to scroll, and pinch to zoom.)
- Operating System Compatibility: Android
- Operating System: Android (The operating system manages all software and hardware, including files, memory and connected devices. Most importantly, it lets you interact with your device and your programs in a visual way; otherwise, you'd be typing computer code to get anything done.)
- App Compatible: true (The product can be connected to a program or software application on a mobile device, which then receives collected data from the product.)
- Built-in Storage: 0.125 gigabytes
- Usage Time: 168 hours (All battery claims depend on network configuration and many other factors; actual results will vary. Battery has limited recharge cycles and may eventually need to be replaced. Battery life and charge cycles vary by use and settings.)
- Metrics Measured: Calories burned
- Protective Qualities: Water resistant
- Maximum Depth of Water Resistance: 98.42 feet (Measurement of the maximum depth of water in which the product is able to resist some degree of water penetration.)
- Band Material: Silicone
- General
- Brand: TOZO
- Model Number: S4
- Product Name: S4 Smartwatch, 1.78" Clear AMOLED Screen, 7-Day Battery, 100+ Sport Modes, Call/Answer, Health/Sleep, iOS/Android, IP68
- Color: Black
- Product Type: Smartwatch
- Form Factor: Wristwatch (The size, arrangement, and physical configuration of the product.)
- Model Family: Universal
- Year of Release: 2026
- Design
- Case Size: 45mm (The diameter or longest measurement of the case.)
- Case Shape: Rectangular
- Band Type: Silicone Band
- Band Color: Black
- Clasp Type: Sport loop
- Rotating Bezel: false (Rotating the bezel controls the various functions of the device.)
- Dimensions
- Case Thickness: 0.15 inches
- Band Width: 24 millimeters
- Product Height: 0.15 inches (The out of box height of the item. Height is measured as the vertical distance from the bottom of the item to the top as it would be primarily used or placed.)
- Product Width: 1.2 inches (The out of box width of the item. Width is measured as the horizontal distance from one side of the item to the other as it would be primarily used or placed.)
- Product Weight: 0.13 ounces (The out of box weight of the item.)
- Product Length: 3.7 inches (The out of box length of the item. Length is measured as the longest dimension of the item.)
- Size: Medium
- Band Size: Medium
- Display
- Display Screen: true
- Screen Size: 45 millimeters (Size of the screen, measured diagonally from corner to corner.)
- Touch Screen: true (Touch-screen devices make navigating more intuitive. Using a touch-screen display, you can do things such as tap to select, hold and drag to move items, swipe to scroll, and pinch to zoom.)
- Screen Resolution: 368 x 448 (Screens come in a range of resolutions (measured in pixels, horizontal x vertical). The higher the resolution, the greater the picture quality.)
- Display Type: AMOLED
- Color Display: true
- Backlit Display: true (Integrated lights allow for visibility of the display in low-light conditions.)
- Adjustable Brightness: true
- Customizable Watch Faces: true
- Screen Material: AMOLED
- Compatibility
- Operating System Compatibility: Android
- Operating System: Android (The operating system manages all software and hardware, including files, memory and connected devices. Most importantly, it lets you interact with your device and your programs in a visual way; otherwise, you'd be typing computer code to get anything done.)
- App Compatible: true (The product can be connected to a program or software application on a mobile device, which then receives collected data from the product.)
- Works With: SmartThings (Compatible with or able to be connected to other smart devices or applications.)
- Voice Assistant Built-in: Not Applicable (A digital assistant built into the device that uses voice commands to answer questions and control smart devices.)
- Connectivity
- Data Plan Required: false
- Network Connectivity: 4G, 5G (The manner in which a device sends data to another device over a long distance using a cellular network.)
- Bluetooth Version: 5.3 (The Bluetooth specification formalized by the Bluetooth Special Interest Group. All versions of the Bluetooth standard are backwards compatible with previous versions.)
- Wireless Connectivity: Bluetooth (The manner in which a device sends data to another device over a short distance without the use of wires or cables.)
- Features
- Built-in Storage: 0.125 gigabytes
- GPS Enabled: false
- Usage Time: 168 hours (All battery claims depend on network configuration and many other factors; actual results will vary. Battery has limited recharge cycles and may eventually need to be replaced. Battery life and charge cycles vary by use and settings.)
- Mobile Notifications: true
- Alert Type: Audible, Vibration
- Music Player: true
- Silent Alarm: true
- Built-In Microphone: true
- Voice Activated: false (Able to interpret dictation and/or respond to simple voice commands.)
- Languages Supported: English
- Activity
- Metrics Measured: Calories burned
- Multi-Sport Tracking: true
- Sensors: Temperature sensor (Detects stimuli such as heat, light, sound, motion, or pressure and responds accordingly by operating a control or initiating a function of the device.)
- Performance
- Protective Qualities: Water resistant
- Maximum Depth of Water Resistance: 98.42 feet (Measurement of the maximum depth of water in which the product is able to resist some degree of water penetration.)
- Ingress Protection (IP) Rating: IP68 (A 4 to 6 character code classifying a product's degree of protection against intrusion of solid particles and liquids as well as impact. Each number in the IP Code denotes a level of protection, determined through testing and published by the International Electrotechnical Commission (IEC). The first digit represents the degree of protection against solid foreign objects or particles and the second digit represents the degree of protection against water ingress.)
- Minimum Operating Temperature: -14 degrees fahrenheit (The lowest recommended ambient (surrounding) temperature in which the product can ideally operate stated by the manufacturer. Generally long-term exposure of the product to temperatures less than the minimum can result in ineffective operation.)
- Maximum Operating Temperature: 140 degrees fahrenheit (The highest recommended ambient (surrounding) temperature in which the product can ideally operate stated by the manufacturer. Generally long-term exposure of the product to temperatures more than the maximum can result in ineffective operation.)
- Power
- Rechargeable: true
- Battery Strength Indicator: true
- Battery Capacity: 300 milliampere hours (The amount of energy stored in the battery.)
- Charging Time: 2 minutes
- Charging Interface(s): Proprietary (The connection for transmitting power to charge the device.)
- Replaceable Battery: false
- Material
- Band Material: Silicone
- Case Material: Stainless Steel
- Case Back Material: Plastic
- Warranty
- Warranty - Parts: TOZO provides an 18-month free warranty from the date of purchase, covering defects in materials or workmanship under normal use
- Warranty - Labor: TOZO provides an 18-month free warranty from the date of purchase, covering defects in materials or workmanship under normal use
- Other
- UPC: 6971681311218
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.
- 1.78" 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.
- 1.78" 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.
Whats Included
- ①TOZO S4 Smart Watch②Magnetic Charging Cable③Instruction Manual④Quick Guide
- ①TOZO S4 Smart Watch②Magnetic Charging Cable③Instruction Manual④Quick Guide
Product Manuals
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| Pros for TOZO - S4 Smartwatch, 1.78" Clear AMOLED Screen, 7-Day Battery, 100+ Sport Modes, Call/Answer, Health/Sleep, iOS/Android, IP68 - Black - (2026) | |||
|---|---|---|---|
| There were no pros for this product— | Overall Performance, Battery Life, Comfort, Features, Design | There were no pros for this product— | There were no pros for this product— |
| Cons for TOZO - S4 Smartwatch, 1.78" Clear AMOLED Screen, 7-Day Battery, 100+ Sport Modes, Call/Answer, Health/Sleep, iOS/Android, IP68 - Black - (2026) | |||
| There were no cons for this product— | There were no cons for this product— | There were no cons for this product— | Battery Life |
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