HAYLOU RS4 Plus Smart Watch: 10-Day Battery Life with AMOLED Display and 105 Workout Modes

The HAYLOU RS4 Plus is a Bluetooth smartwatch designed for fitness tracking and everyday wear. Its core function is to monitor key health metrics like sleep patterns, heart rate, and blood oxygen saturation (SpO2) continuously. With an impressive 10-day battery life even when heart rate monitoring is active 24 hours a day, it reduces the need for frequent charging. The watch syncs wirelessly via Bluetooth 5.1 with the Haylou Fun app on compatible smartphones, providing a detailed overview of your activity and health data. Available in black, champagne, or silver, it combines practical health monitoring with a clear 1.78-inch AMOLED display.

Features and Construction

The RS4 Plus is built around a suite of sensors and a vivid display housed in a compact, water-resistant case. Its construction prioritises continuous monitoring and clear data presentation for a variety of users.

Material and Build

The watch case measures 45.2mm by 37.2mm by 10.4mm, creating a compact profile on the wrist. It is built to an IP68 standard, meaning it is dust-tight and can withstand immersion in water under specified conditions, making it suitable for swimming and exposure to rain. The 20mm wide strap is included and designed to be interchangeable, allowing for potential personalisation with third-party bands. The overall weight, including the strap, is 57.6g.

Size and Practical Fit

The dimensions and weight contribute to a watch that is designed for all-day comfort during both rest and activity. The 1.78-inch AMOLED screen offers a 368x448 pixel resolution, ensuring notifications, workout data, and health statistics are displayed with clarity and good colour contrast. The operating temperature range of 0°C to 45°C ensures reliable performance in most everyday environments, from a cool morning run to a warm summer day.

Uses and Placement

This watch serves as a central hub for fitness enthusiasts and those looking to gain insights into their daily health patterns. Its feature set supports both structured exercise and general wellness tracking.

Event or Professional Use

For dedicated athletes, the 105 built-in workout modes allow for precise tracking across a vast array of sports, from running and cycling to more niche activities. The IP68 rating provides confidence during aquatic sports or training in adverse weather. The motion sensor works in tandem with the heart rate and SpO2 sensors to deliver comprehensive data on workout intensity and recovery, which can be analysed later in the Haylou Fun app.

Everyday Home Use

Beyond exercise, the watch functions as a daily health companion. The 24/7 heart rate monitoring and sleep tracking provide foundational insights into overall well-being and rest quality. The long battery life is a practical advantage for home use, minimising charging interruptions. It also delivers smartphone notifications to your wrist, helping you stay connected without constantly checking your phone.

Benefits and Buying Value

The value of the HAYLOU RS4 Plus stems from its combination of extensive tracking, durable construction, and extended usability between charges, all presented on a high-quality display.

Reuse and Low Maintenance

The robust IP68 build reduces concerns about damage from sweat, rain, or accidental immersion, supporting reuse across countless activities and conditions. The 10-day battery life significantly lowers maintenance, as it requires charging less than once a week even with intensive monitoring features enabled. The interchangeable strap system also offers the potential to refresh the watch's look or replace a worn strap, extending its practical lifespan.

Why Choose This Product

This watch stands out for offering a high-resolution AMOLED display and a week-plus of battery life within a competitively priced package. The breadth of 105 workout modes caters to both general and specific athletic interests, while the core health monitoring sensors provide essential daily data. It presents a balanced option for users seeking detailed activity tracking, clear visual feedback, and the convenience of less frequent charging, without requiring the highest-tier smartphone OS compatibility.