{"product_id":"haylou-rs4-plus-smart-bluetooth-sports-watch-with-1-78-amoled-display-105-workout-modes-ip68-waterproof-rating-and-10-day-battery-life-for-fitness-tracking-heart-rate-sleep-and-spo2-monitoring","title":"HAYLOU RS4 Plus Smart Bluetooth Sports Watch with 1.78\" AMOLED Display, 105 Workout Modes, IP68 Waterproof Rating, and 10-Day Battery Life for Fitness Tracking, Heart Rate, Sleep, and SpO2 Monitoring","description":"\u003ch1\u003eHAYLOU RS4 Plus Smart Sports Watch: 1.78\" AMOLED Display \u0026amp; 10-Day Battery Life\u003c\/h1\u003e\u003cdiv style=\"text-align: center;\"\u003e\u003cimg alt=\"HAYLOU RS4 Plus smartwatch in Black, Champagne, or Silver on wrist showing AMOLED display.\" src=\"https:\/\/images.seoo.uk\/src\/products\/shopify_export\/US10\/260\/2025-10-02\/original-image\/209471e6-14d1-48d7-8bc4-e04b6859a83c.webp\"\u003e\u003c\/div\u003e\n\u003cp\u003eThe HAYLOU RS4 Plus is a feature-rich smart sports watch designed for users who require detailed activity tracking without the inconvenience of daily charging. Its core strength lies in combining a vibrant, high-resolution AMOLED display with a suite of health sensors for 24\/7 monitoring. Supporting over 100 specific workout modes and built to an IP68 waterproof standard, it caters to a wide range of fitness enthusiasts, from gym-goers to swimmers. With a battery life of approximately 10 days under typical use, including continuous heart rate tracking, it offers a practical balance of comprehensive data and extended usability, syncing seamlessly with your smartphone via Bluetooth.\u003c\/p\u003e\n\u003ch2\u003eFeatures and Construction\u003c\/h2\u003e\u003cdiv style=\"text-align: center;\"\u003e\u003cimg alt=\"HAYLOU RS4 Plus smartwatch in Black, Champagne, or Silver on wrist showing AMOLED display.\" src=\"https:\/\/images.seoo.uk\/src\/products\/shopify_export\/US10\/260\/2025-10-02\/original-image\/a6830139-d6c5-4716-9c7f-04aadc4b1c59.webp\"\u003e\u003c\/div\u003e\n\u003cp\u003eThe RS4 Plus is built around a precise set of specifications that define its performance and user experience. Its construction prioritises a blend of detailed visual feedback through its screen and robust, continuous sensing for health metrics. The following details break down the key elements of its design and how they contribute to its function as a daily fitness companion.\u003c\/p\u003e\n\u003ch3\u003eMaterial and Build\u003c\/h3\u003e\n\u003cp\u003eAt the heart of the device is a 1.78-inch AMOLED display, a screen technology known for its deep blacks, high contrast, and vivid colours, which enhances readability in various lighting conditions. This is paired with a 368 by 448 pixel resolution, ensuring that workout data, notifications, and watch faces appear sharp and clear. The watch case, measuring 45.2mm by 37.2mm by 10.4mm, houses the sensors and electronics, while the interchangeable 20mm strap contributes to the total weight of 57.6 grams. The IP68 rating confirms a high degree of protection against dust ingress and sustained immersion in water, making it suitable for swimming and resistant to sweat during intense exercise.\u003c\/p\u003e\n\u003ch3\u003eSize and Practical Fit\u003c\/h3\u003e\n\u003cp\u003eThe watch's dimensions of 45.2mm in width, 37.2mm in height, and 10.4mm in depth position it as a mid-sized sports watch. The 20mm strap width is a common standard, offering users the potential to swap straps for different materials or colours. A total weight of 57.6 grams, including the strap, is designed to provide a comfortable, unobtrusive feel during all-day wear and overnight sleep tracking. The overall size and weight are engineered to house the 230mAh battery and multiple sensors while maintaining a profile suitable for continuous wear during various activities.\u003c\/p\u003e\n\u003ch2\u003eUses and Placement\u003c\/h2\u003e\u003cdiv style=\"text-align: center;\"\u003e\u003cimg alt=\"HAYLOU RS4 Plus smartwatch in Black, Champagne, or Silver on wrist showing AMOLED display.\" src=\"https:\/\/images.seoo.uk\/src\/products\/shopify_export\/US10\/260\/2025-10-02\/original-image\/c0148ca3-d02b-4c27-ada3-ebfe0134dd15.webp\"\u003e\u003c\/div\u003e\n\u003cp\u003eThe RS4 Plus is engineered for versatility, bridging dedicated sports tracking with everyday smartwatch convenience. Its sensor suite and robust build allow it to serve in demanding athletic environments, while its design and battery life make it a practical choice for daily wear. This section explores its application across both focused training scenarios and general daily life.\u003c\/p\u003e\n\u003ch3\u003eEvent or Professional Use\u003c\/h3\u003e\n\u003cp\u003eFor serious training, the watch's support for 105 distinct workout modes allows athletes to select and track metrics specific to their sport, whether it's running, cycling, swimming, or a gym session. The IP68 waterproof certification is critical here, ensuring the device can handle pool swims and wet weather conditions without compromise. Continuous, 24-hour monitoring of heart rate and SpO₂ (blood oxygen saturation) provides athletes with insights into their baseline health, recovery status, and how their body responds to altitude or intense effort. The data syncs to the Haylou Fun app via Bluetooth 5.1 for detailed post-workout analysis.\u003c\/p\u003e\n\u003ch3\u003eEveryday Home Use\u003c\/h3\u003e\n\u003cp\u003eOutside of dedicated workouts, the watch functions as a comprehensive health and notification hub. The automatic sleep monitoring feature gathers data on sleep duration and patterns without any manual input. The long 10-day battery life reduces the frequency of charging, enhancing convenience for daily use. Notifications from a paired smartphone appear on the bright AMOLED display, and the watch operates reliably within a broad temperature range of 0°C to 45°C, accommodating normal indoor and outdoor conditions. Available in Black, Champagne, and Silver, it offers a colour choice to match personal style for all-day wear.\u003c\/p\u003e\n\u003ch2\u003eBenefits and Buying Value\u003c\/h2\u003e\u003cdiv style=\"text-align: center;\"\u003e\u003cimg alt=\"HAYLOU RS4 Plus smartwatch in Black, Champagne, or Silver on wrist showing AMOLED display.\" src=\"https:\/\/images.seoo.uk\/src\/products\/shopify_export\/US10\/260\/2025-10-02\/original-image\/c78a33de-1474-4714-b45a-e4cda78eb1c8.webp\"\u003e\u003c\/div\u003e\n\u003cp\u003eThe value proposition of the HAYLOU RS4 Plus is rooted in its combination of extended battery life, a high-quality display, and extensive tracking capabilities within a single device. It addresses the common trade-offs in smartwatches by offering detailed metrics without sacrificing usability or requiring constant battery management. This section outlines the practical advantages it provides to the user.\u003c\/p\u003e\n\u003ch3\u003eReuse and Low Maintenance\u003c\/h3\u003e\n\u003cp\u003eThe primary benefit is the reduction in charging frequency. The 230mAh battery, combined with efficient power management, delivers about 10 days of use even with heart rate monitoring active 24 hours a day. This longevity means the watch can be worn continuously for sleep tracking and only needs to be charged roughly once a week under typical conditions. The robust IP68 build also contributes to low maintenance, as it can be rinsed clean after a sweaty workout or worn in the rain without concern, supporting its role as a constant wearable.\u003c\/p\u003e\n\u003ch3\u003eWhy Choose This Product\u003c\/h3\u003e\n\u003cp\u003eChoosing the RS4 Plus comes down to needing a capable all-rounder that doesn't cut corners on core features. It provides the visual clarity of an AMOLED screen, a comprehensive set of over 100 activity modes, and key health sensors—all housed in a waterproof design. For users comparing options, the concrete differentiators are the 10-day battery life with active monitoring, the specific IP68 waterproof rating for swimming, and the 1.78-inch AMOLED display. It is a device suited for those who want detailed fitness and health insights without the hassle of frequent charging, compatible with most modern smartphones via the Haylou Fun app.\u003c\/p\u003e\u003cdiv style=\"text-align: center;\"\u003e\u003cimg alt=\"HAYLOU RS4 Plus smartwatch in Black, Champagne, or Silver on wrist showing AMOLED display.\" src=\"https:\/\/images.seoo.uk\/src\/products\/shopify_export\/US10\/260\/2025-10-02\/original-image\/eb3d3958-1874-401d-833f-f43d6c5142a6.webp\"\u003e\u003c\/div\u003e","brand":"test333g7d6s632vw","offers":[{"title":"Silver","offer_id":57724226109823,"sku":"CJZN149680902BY","price":106.98,"currency_code":"GBP","in_stock":true},{"title":"Black","offer_id":57724226142591,"sku":"CJZN149680901AZ","price":106.98,"currency_code":"GBP","in_stock":true},{"title":"Champagne","offer_id":57724226175359,"sku":"CJZN149680903CX","price":106.98,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1009\/7911\/4367\/files\/eb3d3958-1874-401d-833f-f43d6c5142a6.webp?v=1781112715","url":"https:\/\/7ejhx1-1c.myshopify.com\/products\/haylou-rs4-plus-smart-bluetooth-sports-watch-with-1-78-amoled-display-105-workout-modes-ip68-waterproof-rating-and-10-day-battery-life-for-fitness-tracking-heart-rate-sleep-and-spo2-monitoring","provider":"VitraSelect.uk","version":"1.0","type":"link"}