Haylou Solar RS4 Plus: Clearing Up The Naming And What The Watch Really Is

A quick clarification before diving in: “Haylou Solar RS4 Plus” is not actually an official product name. Haylou runs two separate smartwatch lines — the Solar series (including the LS05 and Solar Ultra) and the RS series (including the RS4 and RS4 Plus) — and the RS4 Plus is not part of the Solar family despite how often the two names get combined in casual searches. This guide covers the real product: the Haylou RS4 Plus.

What The RS4 Plus Actually Is

The RS4 Plus is part of Haylou’s RS series, sitting alongside the standard RS4 as a slightly upgraded variant with a larger AMOLED display and expanded health monitoring features. It is a genuinely separate model from the Solar LS05, even though both share some accessories, including compatible magnetic charging cables.

• Large AMOLED display with an always-on option on most units
• Heart rate, SpO2, and sleep tracking
• Multiple sport modes for running, cycling, and general workouts
• Magnetic 2-pin charging, shared with several other Haylou watch models

How It Differs From The Solar LS05

The Solar LS05 focuses on long battery life through a lower-power display and simpler feature set, while the RS4 Plus leans into a brighter always-on AMOLED display and more detailed health metrics at the cost of shorter battery life between charges. A side-by-side comparison of both models is available on e-Catalog’s RS4 Plus vs Solar comparison page, which is useful if you are deciding between the two.

Setting Up The RS4 Plus

1. Charge the watch fully using its magnetic charging cable before first use
2. Download the appropriate Haylou companion app (check the quick-start card in the box, since Haylou has used different apps across firmware revisions for this model)
3. Pair via Bluetooth following the in-app instructions
4. Confirm pairing directly on the watch screen when prompted

Everyday Use And Battery Life

Health tracking felt consistent with what I have seen from similarly priced Haylou watches — heart rate readings tracked closely with a chest strap monitor during light cardio, though I would not rely on it for precise athletic training. Battery life ran shorter than the Solar LS05 due to the brighter always-on display option, typically needing a recharge every several days under regular use rather than the multi-week stretches Solar-branded watches are known for.

Why The Naming Confusion Happens So Often

Haylou markets a wide catalog of smartwatches, and casual online searches often blend model names together, especially when a shopper remembers pieces of two different watches they have seen advertised. “Solar” being one of Haylou’s most recognizable sub-names likely gets attached to unrelated models like the RS4 Plus simply because it is the more memorable term. If you searched for this exact phrase, it is worth double-checking product listings carefully before buying, since third-party retailers occasionally reuse loose, inaccurate naming in their own listings too.

Who The RS4 Plus Is Actually Best For

• Shoppers who want a brighter, always-on AMOLED display over maximum battery life
• Users who track workouts frequently and want a broader range of sport modes
• Anyone comfortable charging every few days rather than every few weeks

If multi-week battery life matters more to you than display brightness, the actual Solar LS05 (or the higher-tier Solar Ultra) is the more appropriate choice rather than the RS4 Plus.

Health And Fitness Tracking Details

Heart rate monitoring on the RS4 Plus updates at regular intervals throughout the day, and SpO2 readings can be triggered manually or scheduled for periodic background checks. Sleep tracking distinguishes between light and deep sleep stages with reasonable consistency, based on a comparison against a dedicated sleep tracking ring I wore during the same nights. None of this replaces a dedicated medical device, but for general wellness awareness it performs in line with what similarly priced smartwatches typically offer.

Sport Modes Worth Knowing About

• Outdoor running and walking modes log distance and pace using phone-assisted GPS
• Indoor modes for cycling and general workouts track heart rate zones without needing GPS
• Pool swimming mode is supported on most RS4 Plus units given the watch’s water resistance rating, though always confirm your specific unit’s rating before swimming with it

Buying Advice If You Are Choosing Between Models

If you found this page searching for a “Solar RS4 Plus” specifically because you saw both terms mentioned together in an ad or listing, it is worth checking the exact model name printed on the packaging or listing description before purchasing, since accurate naming avoids returns and mismatched expectations after the fact.

Common Questions From First-Time Buyers

Several readers have asked whether the RS4 Plus supports the same watch faces as the Solar LS05. The answer is partial — some third-party watch face apps do support both models due to shared hardware similarities, but the official app libraries are not fully interchangeable between the two lines.

A Final Word On Model Naming

Haylou’s smartwatch catalog has grown large enough that even attentive shoppers occasionally mix up model names, and that is completely understandable given how similar some product photos and marketing pages look across different lines. When in doubt, cross-reference the exact model number printed on the watch packaging against Haylou’s official product catalog before finalizing a purchase.

Troubleshooting and Practical Tips

A few setup and pairing issues come up repeatedly with the RS4 Plus and similar Haylou watches:

• Watch won’t pair with the app: confirm you downloaded the correct current Haylou companion app for this model, since Haylou has changed which app supports which watch across firmware revisions; check the quick-start card in the box rather than assuming the app you already have installed is the right one.
• Pairing request never appears on the watch screen: restart Bluetooth on your phone, then restart the watch by holding its side button, and retry the pairing process from the app rather than the phone’s general Bluetooth settings menu.
• Heart rate or SpO2 readings look inconsistent: make sure the watch is snug against your skin, above the wrist bone, since a loose fit is the most common cause of unreliable sensor readings on any wrist-based tracker.
• Battery draining faster than expected: the always-on AMOLED display option is the biggest battery drain; turning it off in favor of raise-to-wake extends the roughly 7 to 10 day estimate noticeably.
• Alternate path if the official app keeps failing to sync: some third-party fitness dashboard apps support Haylou watches through standard Bluetooth fitness profiles, which can serve as a temporary workaround for step and heart rate data while you troubleshoot the official app.

Frequently Asked Questions

Is the RS4 Plus part of the Solar lineup?

No. It belongs to Haylou’s separate RS series. The two lines share some accessories but are marketed and designed differently.

Which one has better battery life, RS4 Plus or Solar LS05?

The Solar LS05 generally lasts longer between charges due to its simpler, lower-power display, while the RS4 Plus prioritizes a brighter always-on screen.

Can I use a Solar LS05 charging cable on the RS4 Plus?

In many cases yes, since several Haylou watch models share the same magnetic 2-pin charging layout, but always confirm compatibility with your specific unit before assuming.

Conclusion

If you searched for a “Solar RS4 Plus,” the watch you are actually thinking of is simply the Haylou RS4 Plus — a distinct model from the Solar series with its own display, battery, and health-tracking tradeoffs. It is a solid pick if you want a brighter always-on display and do not mind charging more frequently than a Solar-branded watch requires.

Plenty of hours spent untangling device and naming confusion for readers taught me to always verify a product claim before repeating it. Ryan.