HAYLOU RS4 Plus Smartwatch with AMOLED Display, 105 Workout Modes and IP68 Water Resistance

Designed for everyday fitness tracking and active lifestyles, the HAYLOU RS4 Plus smartwatch monitors key health metrics like heart rate and blood oxygen (SpO2) throughout the day. Its Bluetooth 5.1 connection syncs data with the Haylou Fun app on smartphones running Android 6.0 or iOS 11.0 and above, providing a detailed overview of your activity and sleep patterns. With a 10-day battery life achievable when 24-hour heart rate monitoring is active, it reduces the frequency of charging cycles. The watch is built for practical use, featuring a 1.78-inch AMOLED screen housed in a 45.2mm by 37.2mm case that is water-resistant to an IP68 standard.

Features and Construction

The core functionality of the RS4 Plus centres around its integrated sensors and durable build, offering a balance of tracking capability and resilience for daily wear.

Material and Build

The construction of the watch prioritises functionality for active use. It carries an IP68 water-resistance rating, meaning it is protected against dust ingress and can withstand immersion in water under defined conditions, making it suitable for swimming and use in the rain. It is designed to operate in a temperature range from 0°C to 45°C, accommodating various climates and indoor environments. The 20mm wide strap is replaceable, allowing for potential personalisation and maintenance over time.

Size and Practical Fit

The watch case dimensions of 45.2mm in width, 37.2mm in height, and 10.4mm in thickness offer a standard size for a sports smartwatch. Weighing 57.6 grams with the strap attached, it provides a lightweight feel on the wrist during extended wear and physical activity. The 20mm strap width is a common size, offering compatibility with a wide range of aftermarket straps if users wish to change the style. The overall proportions are designed to house the 1.78-inch AMOLED display and the necessary sensors without being overly bulky.

Uses and Placement

From structured workouts to daily health insights, the RS4 Plus serves multiple roles for users looking to quantify their activity and well-being.

Event or Professional Use

With support for 105 distinct workout modes, the watch caters to a broad spectrum of athletic disciplines, from running and cycling to more niche activities. The integrated heart rate sensor and motion sensor work together to provide specific metrics for each selected mode. The SpO2 sensor adds another data point, monitoring blood oxygen saturation levels, which can be relevant for athletes training at altitude or monitoring general wellness. Data from these sessions is stored on the watch and can be reviewed in detail after syncing with the smartphone app.

Everyday Home Use

Beyond dedicated workouts, the watch functions as a continuous health monitor. It tracks heart rate throughout the day and night, contributing to sleep stage analysis. The always-available data syncing via Bluetooth 5.1 means trends can be easily observed in the Haylou Fun app over time. The IP68 rating adds practicality for daily chores, handwashing, or sudden weather changes, removing the need to take the watch off frequently. The long battery life minimises daily maintenance, allowing for consistent tracking without interruption.

Benefits and Buying Value

The combination of core tracking features, robust construction, and extended battery life positions this smartwatch as a practical tool for fitness enthusiasts.

Reuse and Low Maintenance

The product is designed for repeated, long-term use with minimal upkeep. The 10-day battery life, based on continuous heart rate monitoring, means most users will only need to charge it roughly once a week, depending on usage patterns. The IP68 build quality protects the internal electronics from common hazards like sweat and water, promoting longevity. The replaceable strap design also extends the usable life of the watch, as worn straps can be swapped out without replacing the entire unit.

Why Choose This Product

For users seeking a sports-focused smartwatch, the HAYLOU RS4 Plus offers a specific set of verified features: a high-resolution AMOLED display, a wide array of 105 workout modes, and core health sensors for heart rate and SpO2. Its 10-day battery life and IP68 water resistance are concrete, practical advantages that support active use without constant concern for charging or damage. The package includes all necessary items to begin use immediately, with colour options in Black, Champagne, and Silver to suit different preferences.