HAYLOU RS4 Plus Smartwatch: 1.78" AMOLED Display, 105 Sports Modes & IP68 Waterproof

The HAYLOU RS4 Plus is a feature-rich smart sports watch designed for active individuals who want detailed tracking without constant charging. Its core strength lies in combining a high-quality 1.78-inch AMOLED display with extensive health and fitness monitoring, including 24/7 heart rate and SpO2 sensors. With 105 pre-loaded workout modes, it caters to everything from running and cycling to yoga and swimming, thanks to its IP68 water-resistance grade. Connectivity is handled via Bluetooth 5.1 to the Haylou Fun app on your smartphone, making data review straightforward. The watch delivers approximately 10 days of battery life on a single charge, even with continuous heart rate monitoring active, reducing daily maintenance.

Features and Construction

The RS4 Plus is built around a precise set of specifications focused on functionality and durability for sports use. Its construction prioritises clear information display and robust performance in various environments.

Material and Build

The watch case measures 45.2mm by 37.2mm, with a thickness of 10.4mm, creating a modern sports watch profile. It uses a standard 20mm quick-release strap system, allowing you to easily change the look with third-party bands. The total weight, including the supplied strap, is 57.6 grams, contributing to a lightweight feel on the wrist during activity. The IP68 rating certifies protection against dust ingress and sustained immersion in water under specified conditions, making it suitable for swimming and use in the rain.

Size and Practical Fit

With its 45.2 x 37.2 mm case dimensions, the RS4 Plus offers a substantial screen area while remaining wearable for most wrist sizes. The 20mm strap width is a common standard, ensuring wide compatibility with replacement straps for customisation or different materials. The 10.4mm case depth contributes to a balanced silhouette that is not overly bulky. The operating temperature range of 0°C to 45°C ensures reliable performance during outdoor workouts in most seasonal conditions.

Uses and Placement

This watch is positioned as a versatile fitness companion, bridging everyday health tracking with dedicated sports performance monitoring. Its wide array of features supports both casual users and more dedicated athletes.

Event or Professional Use

The 105 workout modes provide granular tracking for a vast range of activities, from standard cardio to niche sports, allowing for specific data analysis. The combination of a heart rate sensor, motion sensor, and SpO2 sensor enables detailed performance and recovery metrics useful for training programmes. The IP68 waterproofing allows it to be worn for swimming sessions, tracking pool workouts effectively. The long 10-day battery life means it can be worn continuously through multi-day events or training camps without needing a charger.

Everyday Home Use

For daily wear, the 24-hour heart rate monitoring and sleep tracking provide continuous insights into general wellbeing and rest patterns. The bright AMOLED display ensures notifications and time are always clearly readable in various lighting conditions. Sync with the Haylou Fun app on your Android or iOS device lets you review trends over time for health metrics. The simple charging via the included cable integrates easily into a weekly routine, given the extended battery lifespan.

Benefits and Buying Value

The HAYLOU RS4 Plus offers practical advantages centred on reduced maintenance, comprehensive data, and flexible use, delivering value through its specification set rather than superfluous features.

Reuse and Low Maintenance

The 10-day battery life significantly reduces charging frequency, allowing for near-continuous wear and data collection. The interchangeable 20mm strap system means the watch can adapt to different occasions or replace worn straps without replacing the entire device. The robust IP68 build ensures it can be worn in most daily scenarios, from washing hands to workouts, without concern. Compatibility with Android 6.0+ and iOS 11.0+ covers a broad range of modern smartphones, extending its usable life as you upgrade your phone.

Why Choose This Product

This watch stands out for its combination of a high-resolution AMOLED screen and extensive battery life, a balance not always found in fitness trackers. The inclusion of SpO2 monitoring alongside standard heart rate tracking provides a more complete picture of your fitness and recovery. The sheer number of workout modes (105) offers specificity for athletes who train across multiple disciplines. The IP68 rating provides genuine swim-proof capability, expanding its use beyond basic splash resistance.