---
product_id: 627570444
title: "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, Gold"
brand: "tozo"
price: "445.61 DT"
currency: TND
in_stock: true
reviews_count: 12
category: "Tozo"
url: https://www.desertcart.tn/products/627570444-s4-acufit-one-smart-watch-1-78-amoled-screen-men
store_origin: TN
region: Tunisia
---

# IP68 Waterproof for worry-free wear 1.78" AMOLED HD Display, 368x448 px 100+ Sports Modes for versatile workouts 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, Gold

**Brand:** tozo
**Price:** 445.61 DT
**Availability:** ✅ In Stock

## Summary

> ⌚ Elevate your every moment with TOZO S4 — where style meets unstoppable smart fitness!

## Quick Answers

- **What is this?** 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, Gold by tozo
- **How much does it cost?** 445.61 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/627570444-s4-acufit-one-smart-watch-1-78-amoled-screen-men)

## 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

- • **Fitness for Every Move:** Over 100 sports modes empower you to optimize every workout, from yoga to mountain climbs, with detailed calorie and distance tracking.
- • **All-Day Health Insights:** Track heart rate, blood oxygen, stress, and sleep patterns with precision thanks to an upgraded high-precision wear detection chip.
- • **Crystal-Clear AMOLED Display:** Experience ultra-vivid visuals with a 1.78" AMOLED screen boasting 25% faster response and 368x448 resolution for unmatched clarity.
- • **Durable Elegance Meets Comfort:** Crafted with a high-strength aluminum alloy case and skin-friendly strap, plus magnetic charging for convenience and style that fits your lifestyle.
- • **Seamless Connectivity & Control:** Stay effortlessly connected with Bluetooth call dial, message notifications, music control, and weather updates on iOS and Android.

## Overview

The TOZO S4 AcuFit One Smart Watch features a vibrant 1.78" AMOLED HD display with 368x448 resolution and 25% faster response speed. It offers comprehensive health monitoring including heart rate, blood oxygen, stress, and sleep tracking, alongside 100+ sports modes for diverse fitness needs. With IP68 waterproofing, Bluetooth call and message notifications, and seamless iOS/Android compatibility, it combines durable aluminum alloy construction with a comfortable, skin-friendly strap and magnetic charging for up to 7-10 days of battery life. Perfect for professionals seeking a stylish, multifunctional smartwatch that keeps pace with their active lifestyle.

## Description

Product description 1.78" AMOLED Ultra-Clear Display for Stunning Visu Featuring a 1.78" AMOLED display with a resolution of 368x448 and a pixel density of 360 PPI. High-Precision Wear Detection Chip The upgraded high-precision wear detection chip improves the accuracy of health indicators. Side Button The watch can be operated by rotating the side buttons. 100+ Sports Modes All-inclusive Fitness Analysis 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. Convenient Magnetic Charging Easy-to-use magnetic charging for added convenience. Convenient Magnetic Charging Easy-to-use magnetic charging for added convenience. Skin-Friendly Material Strap Experience comfort with the skin-friendly material strap. Skin-Friendly Material Strap Experience comfort with the skin-friendly material strap. High-strength Aluminum Alloy Casing Durable casing crafted from high-strength aluminum alloy. High-strength Aluminum Alloy Casing Durable casing crafted from high-strength aluminum alloy. Ultra-Clear AMOLED Screen Crystal-clear visuals on the 1.78'' AMOLED screen. Ultra-Clear AMOLED Screen Crystal-clear visuals on the 1.78'' AMOLED screen. 100+ Personalized Watch Faces Choose from a variety of 100+ personalized watch faces. 100+ Personalized Watch Faces Choose from a variety of 100+ personalized watch faces. Always-On Display Stay informed with the always-on display feature. Always-On Display Stay informed with the always-on display feature. Stable Connectivity & User-friendly Compatibility 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.

Review: Amazing - Very good look
Review: Elegant multifunctional smart watch - 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.

## 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 S4 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 S4 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 7-10 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 |
|---------------|-------|
| ASIN | B0CMTB36Z3 |
| Additional Features | Heart Rate Monitor, Pedometer, Sleep Monitor |
| Age Range Description | Adult |
| Band Color | Gold |
| Band Length | 16.4 Centimeters |
| Band Material Type | Stainless Steel |
| Band Width | 22 Millimeters |
| Battery Average Life | 7 days |
| Battery Capacity | 300 Milliamp Hours |
| Battery Cell Type | Lithium Metal |
| Battery Charge Time | 2 Hours |
| Battery Power | 300 |
| Battery capacity | 300 Milliamp Hours |
| Best Sellers Rank | #17,715 in Electronics ( See Top 100 in Electronics ) #484 in Smartwatches |
| Brand | TOZO |
| Built-In Media | Charging cable |
| Case Material Type | Aluminum |
| Cellular Technology | Bluetooth |
| Clasp Type | Tang Buckle" or "Deployant Clasp" or "Foldover Clasp |
| Closure Type | Hinged clasp. |
| Color | Gold |
| Communication Feature | Bluetooth |
| Compatible Devices | Smartphone |
| Compatible Phone Models | Android 9.0+ and iOS 11.0+ devices |
| Connectivity Technology | Bluetooth |
| Connectivity technology | Bluetooth |
| Controller Type | Touch Control |
| Customer Reviews | 4.0 out of 5 stars 501 Reviews |
| Display Type | AMOLED |
| GPS Geotagging Functionality | No GPS |
| Global Trade Identification Number | 06971681318927 |
| Human Interface Input | Buttons, Touchscreen |
| Item Dimensions | 16.4 x 11.4 x 1.9 centimeters |
| Item Weight | 39 Grams |
| Manufacturer | TOZO |
| Maximum Display Brightness | 600 Nit |
| Memory Storage Capacity | 128 MB |
| Memory storage capacity | 128 MB |
| Metrics Measured | Heart Rate Monitor, Sleep Duration, Blood Oxygen Monitor |
| Model Name | TOZO S4 |
| Model Number | S4 |
| Operating System | Wear OS |
| Operating system | Wear OS |
| RAM Memory Installed | 128 MB |
| Resolution | 368 x 448 |
| Screen Size | 1.78 Inches |
| Shape | Square |
| Special features | Heart Rate Monitor, Pedometer, Sleep Monitor |
| Sport Type | Multi-Sports |
| Style Name | Modern |
| Supported Application | [Many] |
| Supported Satellite Navigation System | GPS |
| Target Audience | Men, Unisex Adults, Unisex Youth, Women |
| Unit Count | 1.00 Count |
| 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 |
| Wireless communication standard | Bluetooth |

## Product Details

- **Battery capacity:** 300 Milliamp Hours
- **Connectivity technology:** Bluetooth
- **Memory storage capacity:** 128 MB
- **Operating system:** Wear OS
- **Special features:** Heart Rate Monitor, Pedometer, Sleep Monitor

## Images

![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, Gold - Image 1](https://m.media-amazon.com/images/I/71-RgznkR2L.jpg)

## Available Options

This product comes in different **Color** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Amazing
*by A***I on 25 November 2025*

Very good look

### ⭐⭐⭐⭐⭐ Elegant multifunctional smart watch
*by ا***س on 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 M***. on 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+ Gold
- TOZO T21 Wireless Earbuds Bluetooth 5.3 in Ear Headphones Dual Mic Call Noise Cancelling IPX8 Waterproof 44H Playback Stereo Sound with LED Display Wireless Charging Case 32 EQs via APP Black

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*Product available on Desertcart Tunisia*
*Store origin: TN*
*Last updated: 2026-07-09*