HAYLOU RS4 Plus Smart Bluetooth Sports Watch with 1.78" AMOLED Display, 105 Workout Modes, and IP68 Water-Resistance for Heart Rate and Sleep Monitoring, 10-Day Battery Life, Available in Black, Champagne, and Silver
HAYLOU RS4 Plus Smart Sports Watch: 10-Day Battery, AMOLED Display, and IP68 Water-Resistance

The HAYLOU RS4 Plus is a Bluetooth-connected sports watch designed for users who require detailed fitness and health monitoring without frequent charging. It consolidates multiple tracking functions into a single device, featuring a 1.78-inch AMOLED screen for clear data presentation. With sensors for continuous heart rate, blood oxygen (SpO2), and sleep monitoring, it supports an extensive range of over 105 specific workout modes. Its construction prioritises practicality with a 10-day battery life and an IP68 rating for dust and water resistance, making it a versatile companion for daily activities and various exercise routines.
Features and Construction

The RS4 Plus is built around a suite of sensors and a high-contrast display, packaged in a case designed for all-day wear. Its dimensions and weight are optimised for comfort during continuous use, whether for sleep tracking or intensive workouts.
Material and Build
The watch case and its accompanying 20mm strap are constructed from durable materials suitable for sports and daily use. The assembly incorporates an IP68 water-resistance grade, meaning it is protected against dust ingress and can withstand immersion in water under defined conditions. This build allows it to be worn in various environments, from the gym to outdoor runs, without concern over minor exposure to sweat or rain.
Size and Practical Fit
With dimensions of 45.2mm in width, 37.2mm in height, and a 10.4mm thickness, the RS4 Plus presents a standard watch profile. It weighs 57.6 grams when fitted with its strap, which is 20mm wide at the lugs. This size and weight balance aims to provide a secure, comfortable fit on the wrist that is noticeable but not overly burdensome during physical activity or overnight wear for sleep monitoring.
Uses and Placement

This smartwatch serves multiple roles, from a dedicated sports tracker to a general health monitor. Its compatibility and feature set make it relevant for both structured exercise sessions and broader wellness tracking throughout the day.
Event or Professional Use
For dedicated athletic training or event participation, the watch's 105+ workout modes allow users to select and track specific activities with relevant metrics. The integrated heart rate and motion sensors provide data during these sessions, which can be reviewed post-workout. The IP68 rating offers reliability in diverse conditions, whether running in the rain or cycling on dusty trails, ensuring the device continues to function.
Everyday Home Use
Beyond workouts, the RS4 Plus functions as a daily health companion. Its 24-hour heart rate and SpO2 monitoring, along with sleep tracking, provide insights into general wellness patterns. The 10-day battery life reduces the frequency of charging interruptions, making it easier to maintain continuous data collection. The clear AMOLED display shows notifications and time, serving practical purposes outside of fitness contexts.
Benefits and Buying Value

The value of the HAYLOU RS4 Plus stems from its combination of extended battery life, a quality display, and comprehensive tracking in a water-resistant build. It is positioned as a practical tool for users who prioritise data accuracy and device longevity over superfluous features.
Reuse and Low Maintenance
The product's value is enhanced by its durability and low maintenance needs. The IP68 construction reduces worry about damage from sweat or accidental splashes, promoting daily wear. The long battery life minimises charging cycles, which can contribute to the battery's long-term usability. The strap is replaceable, offering a potential avenue for customisation or renewal if the original wears out.
Why Choose This Product
Choosing the RS4 Plus is justified by its specific, measurable specifications that cater to active lifestyles. The 1.78-inch AMOLED screen offers better visibility in various lighting compared to standard LCDs. The explicit 10-day battery life with active monitoring addresses a common pain point in smartwatches. The inclusion of over 105 workout modes and SpO2 tracking provides a breadth of data not always found in similarly positioned devices, making it a data-rich option for fitness enthusiasts.
