--- product_id: 591467193 title: "TOZO S4 AcuFit One Smart Watch 1.78\" AMOLED Screen for Men Women, Bluetooth Call Dial Fitness Tracker, Heart Rate and Blood Oxygen, Sleep Monitor, IP68 Waterproof, Workout for iOS Android, Black | Bluetooth Call Answer Fitness Tracker, Sleep Monitor IP68 Waterproof for iOS 11.0+ Android 9.0+ Black" brand: "tozo" price: "271.88 DT" currency: TND in_stock: true reviews_count: 12 url: https://www.desertcart.tn/products/591467193-tozo-s4-acufit-one-smart-watch-1-78-amoled-screen store_origin: TN region: Tunisia --- # IP68 Waterproof for worry-free wear 1.78" AMOLED HD Display, 368x448 px 100+ Sports Modes for versatile workouts TOZO S4 AcuFit One Smart Watch 1.78" AMOLED Screen for Men Women, Bluetooth Call Dial Fitness Tracker, Heart Rate and Blood Oxygen, Sleep Monitor, IP68 Waterproof, Workout for iOS Android, Black | Bluetooth Call Answer Fitness Tracker, Sleep Monitor IP68 Waterproof for iOS 11.0+ Android 9.0+ Black **Brand:** tozo **Price:** 271.88 DT **Availability:** ✅ In Stock ## Summary > ⌚ Elevate your hustle with TOZO S4 — where smart meets stylish. ## Quick Answers - **What is this?** TOZO S4 AcuFit One Smart Watch 1.78" AMOLED Screen for Men Women, Bluetooth Call Dial Fitness Tracker, Heart Rate and Blood Oxygen, Sleep Monitor, IP68 Waterproof, Workout for iOS Android, Black | Bluetooth Call Answer Fitness Tracker, Sleep Monitor IP68 Waterproof for iOS 11.0+ Android 9.0+ Black by tozo - **How much does it cost?** 271.88 DT with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/591467193-tozo-s4-acufit-one-smart-watch-1-78-amoled-screen) ## Best For - tozo enthusiasts ## Why This Product - Trusted tozo brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Crystal-Clear AMOLED Display:** Experience ultra-sharp visuals with 25% faster response and vibrant colors that keep you ahead in style and clarity. - • **All-Day Health & Fitness Tracking:** Monitor heart rate, blood oxygen, sleep, and stress with precision, empowering your wellness journey every minute. - • **Seamless Bluetooth Calling & Notifications:** Stay effortlessly connected with call dial, logs, and message alerts right on your wrist—never miss a beat. - • **7-11 Days Battery Life with Magnetic Charging:** Power through your busy week without constant recharging, and enjoy hassle-free magnetic charging in minutes. - • **Sleek, Durable Design with Personalized Style:** Lightweight aluminum alloy case and skin-friendly silicone strap combine comfort with a customizable watch face to match your vibe. ## Overview The TOZO S4 AcuFit One is a cutting-edge smartwatch featuring a 1.78-inch AMOLED HD display with 368x448 resolution and 360 PPI for stunning visuals. It offers comprehensive health monitoring including heart rate, blood oxygen, sleep, and stress tracking, alongside over 100 sports modes to support diverse fitness goals. With Bluetooth call functionality, message notifications, and seamless iOS/Android compatibility, it keeps you connected on the go. Its IP68 waterproof rating and 7-11 day battery life ensure durability and convenience, all wrapped in a sleek aluminum alloy case with a comfortable silicone strap. ## Description TOZO was established in Seattle who is dedicated to research, develop and produce high-tech digital products. Include wireless audio , smart IOT, virtual reality, and digital accessories. Dedicated to produce best quality products by choosing high quality materials, shortening intermediate links and improving efficiency. In order to clients can get excellent products and extreme user experiences and green low-carbon life. Featuring a 1.78" AMOLED display with a resolution of 368x448 and a pixel density of 360 PPI. The upgraded high-precision wear detection chip improves the accuracy of health indicators. The watch can be operated by rotating the side buttons. 100+ sports modes tailored to meet all your fitness ambitions, from hikes to mountain climbs. Experience accurate tracking of your calorie expenditure, distance traveled, and more. TOZO AcuFit One seamlessly syncs with most iOS, Android, and Bluetooth-enabled smartphones. Easily establish a connection with your phone and embark on your journey toward an intelligent life. ## Features - 【User-Friendly Design with AMOLED】Featuring an upgraded 1.78'' ultra-clear AMOLED HD Display with 368*448 resolution, which has 25% faster response speed than previous, a wider visual range, lower energy consumption, wider color gamut, and higher contrast, TOZO S5 takes you to experience unprecedented crystal clear visual effects. - 【All-in-One Smart Watch】TOZO smart watch is the perfect companion for both men and women, combining a fitness tracker and a stylish accessory all in one. Stay connected with its Bluetooth calling feature, as well as call logs and message notifications. - 【Comprehensive Health Monitoring】Equipped with an extensive range of health tracking features, including heart rate monitoring, blood oxygen level detection, and stress testing. It also tracks your sleep patterns to ensure you get the restful night's sleep you deserve. - 【Versatile Fitness Tracker】With over 100 different sports modes, our TOZO S5 helps you stay active and reach your fitness goals. Whether you're running, cycling, or practicing yoga, this watch will accurately track your workouts and provide valuable insights to improve your performance. - 【Worry-free Battery life and Waterproof】With its long-lasting battery, you can wear our smart watch 7-11 days at a time without worrying about recharging. Plus, it is waterproof, making it perfect for daily activities. - 【Bluetooth Connectivity and Compatibility】When the S4 smart watch is connected to the app via Bluetooth, you can control the music player, check today's local weather, and support mobile search functions. TOZO S4 (AcuFit One) syncs seamlessly with most iOS, Android, and Bluetooth-enabled smartphones. Go to App Store or Google Play to download and install "TOZO Health" for free, then connect our smart watch to your phone to start your smart life journey. - 【Personal Appearance】The high-strength aluminum alloy shell injects solid protection into the watch. The skin-friendly material strap is designed to fit your wrist better and give you a comfortable touch. At the same time, the S4 smart watch also has a convenient magnetic charging function and provides a variety of personalized watch face options, allowing you to show your personal style as you like. ## Technical Specifications | Specification | Value | |---------------|-------| | Additional Features | Versatile Fitness Tracker with over 100 different sports modes | | Age Range Description | Adult | | Asin | B07L1GRYN4 | | Band Color | Black | | Band Length | 210 Millimeters | | Band Material Type | Silicone | | Band Width | 22 Millimeters | | Battery Average Life | 10.0, 7.0 days | | Battery Capacity | 300 Milliamp Hours | | Battery Cell Type | Lithium Ion | | Battery Charge Time | 2 Hours | | Battery Power | 300 | | Best Sellers Rank | #23,258 in Electronics (See Top 100 in Electronics) #657 in Smartwatches | | Brand | TOZO | | Built In Media | Magnetic Charging Cable | | Case Material Type | Aluminum | | Cellular Technology | Bluetooth | | Clasp Type | Deployant Clasp | | Color | Black | | Communication Feature | Bluetooth | | Compatible Devices | Smartphone | | Compatible Phone Models | all current iPhone models, all current Samsung Galaxy models, and other Bluetooth-enabled Android devices | | Connectivity Technology | Bluetooth | | Controller Type | Touch Control | | Country Of Origin | China | | Customer Reviews | 4.0 4.0 out of 5 stars (498) 4.0 out of 5 stars | | Display Type | AMOLED | | Global Trade Identification Number | 06971681318361 | | Gps Geotagging Functionality | GPS Via Smartphone | | Human Interface Input | Buttons, Touchscreen | | Item Dimensions | 16.4 x 11.4 x 1.9 centimeters | | Item Dimensions D X W X H | 115D x 46W x 38H millimeters | | Item Weight | 39 Grams | | Manufacturer | TOZO | | Maximum Display Brightness | 400 Nit | | Memory Storage Capacity | 128 MB | | Metrics Measured | optical_heart_rate, blood_oxygen | | Model Name | TOZO S4 AcuFit One | | Model Number | S4 | | Operating System | [Proprietary Operating System] | | Ram Memory Installed | 128 MB | | Resolution | 368 x 448 | | Screen Size | 1.78 Inches | | Shape | Rectangular | | Sport Type | Cycling, Fitness, Running, Swimming | | Style Name | Modern | | Supported Application | Fitness Tracker, Heart Rate Monitor, Blood Oxygen Monitor, Phone Call | | Supported Satellite Navigation System | GPS | | Target Audience | men and women | | Warranty Type | Limited | | Water Resistance Depth | 1.5 Meters | | Water Resistance Level | Water Resistant | | Waterproof Rating | IP68 | | Wearable Computer Type | Smart Watch | | Wireless Compability | Bluetooth | | Wireless Provider | du | ## Product Details - **Operating system:** [Proprietary Operating System] - **Memory storage capacity:** 128 MB - **Special features:** Versatile Fitness Tracker with over 100 different sports modes - **Battery capacity:** 3E+2 Milliamp Hours - **Connectivity technology:** Bluetooth ## Images ![TOZO S4 AcuFit One Smart Watch 1.78" AMOLED Screen for Men Women, Bluetooth Call Dial Fitness Tracker, Heart Rate and Blood Oxygen, Sleep Monitor, IP68 Waterproof, Workout for iOS Android, Black | Bluetooth Call Answer Fitness Tracker, Sleep Monitor IP68 Waterproof for iOS 11.0+ Android 9.0+ Black - Image 1](https://m.media-amazon.com/images/I/712AP1B29kL.jpg) ## Available Options This product comes in different **Color** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Amazing *by on Reviewed in the United Arab Emirates 25 November 2025* Very good look ### ⭐⭐⭐⭐⭐ Elegant multifunctional smart watch *by on Reviewed in the United Arab Emirates 2 January 2025* I got this TOZO S4 smartwatch 1 month before .It is elegant ,multifunctional and user friendly with a reasonable price. It helped me with my health issues like sleep study, heart rate and oxygen saturation,mainly when using TOZO Health app, but I hope to get another app. for other functions of the watch.I had an issue with the watch, but the customer service helped me quickly to solve it. ### ⭐⭐⭐⭐⭐ Good product *by on Reviewed in the United Arab Emirates 30 December 2024* I have Tozo S2 and now the S4 is better ## Frequently Bought Together - TOZO AMOLED S4 AcuFit One Smart Watch 1.78" Ultra-Clear Screen for Men Women, Call/Answer Fitness Tracker,Sleep Monitor IP68 Waterproof for iOS 11.0+ Android 9.0+ Black - smaate 3D Screen Protector Compatible with TOZO S4 AcuFit One 1.78” Smart Watch - MIHENCE Screen Protector Compatible for TOZO S4 Smart Watch, HD Full Coverage TPU Protective Film Compatible for TOZO S4 1.78-inch Smartwatch (6PCS) --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.tn/products/591467193-tozo-s4-acufit-one-smart-watch-1-78-amoled-screen](https://www.desertcart.tn/products/591467193-tozo-s4-acufit-one-smart-watch-1-78-amoled-screen) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-08-17*