Apple Watch S10: The Ultimate Guide to Choosing Yours

By Joybuy, Head of Product RecommendationsPublished July 20, 2026

Every new Apple Watch is a major event for tech enthusiasts and healthy lifestyle advocates. This year, the Apple Watch S10 doubles down on a refined design, new finishes like the highly anticipated jet black, and even more advanced health features. As an iPhone owner, are you on the fence about taking the plunge for this Apple smartwatch? Wondering if this new model is truly right for you?

To help you make an informed decision, we've broken down the features of the Apple Watch Series 10. Follow this guide to make the right choice, without the unnecessary marketing jargon.

Key Considerations Before Choosing Your Apple Watch

Design is important, but a smartwatch must first and foremost meet your needs. Here are a few points to check to ensure you make the right decision.

1. Check Compatibility with Your iPhone

The strength of the Apple ecosystem is also its main constraint: compatibility. The Apple Watch S10, running on watchOS 11, requires an iPhone Xs (or later) updated to iOS 18 (or a more recent version). A quick trip to your iPhone's settings is a must before you check out to avoid any unpleasant surprises.

2. Understand the Scope of Health Features

Modern smartwatches integrate increasingly sophisticated sensors. The Apple Watch S10 offers features like taking an ECG (electrocardiogram) or sleep apnea detection. Keep in mind that these tools are wellness indicators, not diagnostic instruments. The data they collect is an excellent basis for a conversation with your doctor, but it cannot replace professional medical advice.

3. Choose Between GPS and GPS + Cellular

This choice directly impacts the price of the watch, but more importantly, how you use it day-to-day.

• GPS Model: It relies on your nearby iPhone's Wi-Fi and Bluetooth connection to make calls, send messages, and browse the internet. This is the ideal option if you almost always have your phone with you.
• GPS + Cellular Model: Thanks to its standalone mobile connectivity (via an e-SIM plan), you can leave your iPhone at home and still receive calls or stream music during your run. A smart choice for athletes or those seeking maximum independence.

Our Smartwatch Recommendations

To guide you, we've scrutinized the leading models of the moment. Here is our selection, based on performance, design, and use case criteria.

Editor's Pick: Apple Watch S10 GPS 46mm

Why it stands out: The Apple Watch S10 marks a significant leap forward in design. Its case, touted as the thinnest ever created by Apple, is paired with a larger screen and the new jet black finish for a result that is as discreet as it is elegant. The S10 processor ensures flawless fluidity and responsiveness in daily use.

Highlights:

• Refined Design: a thinner case and an OLED screen up to 30% larger than previous generations.
• Comprehensive Health Tracking: irregular heart rhythm notifications, temperature sensor for cycle tracking, ECG, and sleep apnea monitoring.
• Fast Charging: regain 80% of battery life in about 30 minutes, perfect for heavy use.
• Durable and Water-Resistant: IP6X certified against dust and water-resistant up to 50 meters, it can even join you for a swim.

Who it's for: For iPhone owners looking for the ultimate premium smartwatch that combines cutting-edge health tracking, sports performance, and seamless integration with the Apple ecosystem. The Apple Watch 46mm size offers an excellent balance of wrist comfort and readability.

See the price of the Apple Watch S10

For the Adventurer: Apple Watch Ultra 3 GPS + Cellular 49mm

Why it stands out: The Apple Watch Ultra 3 is built for extreme conditions. Its rugged titanium case, sapphire crystal, and record-breaking battery life make it a reliable partner for endurance sports, hiking, or diving. The dual-frequency GPS ensures ultra-precise location tracking, even in the most challenging environments.

Highlights:

• Record-Breaking Battery Life: up to 42 hours in normal use and 72 hours in low-power mode.
• All-Terrain Design: 49mm titanium case and water resistance up to 100 meters.
• Enhanced Safety: customizable Action button, emergency siren, and off-grid satellite emergency calls.
• Perfect Readability: the largest and brightest screen ever on an Apple Watch, ideal in direct sunlight.

Who it's for: For demanding athletes, hikers, divers, and anyone for whom ruggedness, battery life, and safety features are non-negotiable criteria for their outdoor adventures.

See the price of the Apple Watch Ultra 3

The Budget-Friendly Alternative: FITTEK Smart Watch GTL1

Why it stands out: The FITTEK GTL1 is an excellent entry point for anyone who wants to try activity tracking without breaking the bank. It covers the essentials in a lightweight and comfortable format.

Highlights:

• Excellent Battery Life: up to 7 days of use on a single charge.
• 24/7 Health Tracking: measures heart rate, blood oxygen level (SpO?), and analyzes sleep.
• 16 Sports Modes to track your activities.
• Wellness Coach: alerts to hydrate and move more often.

Who it's for: For those on a tight budget or for a first-time experience, this simple and effective watch provides essential tracking of your fitness and sleep.

See the price of the FITTEK GTL1

Looking for Other Options?

Our selection covers the main needs, but the smartwatch market is full of hidden gems. To explore other models, sizes, or brands, feel free to consult our comprehensive guide to smartwatches, which brings together a wide range of choices for all uses and budgets.

Frequently Asked Questions (FAQ)

1. What are the compatibility requirements for the Apple Watch Series 10? The Apple Watch S10 requires an iPhone Xs (or later) running iOS 18 (or a later version). It is not compatible with Android smartphones.

2. Do the ECG and sleep apnea detection features replace medical advice? Absolutely not. The health features of the Apple Watch are wellness indicators, not diagnostic tools. They can alert you and inform a discussion with your doctor, but they are in no way a substitute for qualified medical advice.

3. What is the difference in battery life between the Apple Watch S10 and the Apple Watch Ultra 3? The Apple Watch S10 offers up to 36 hours of battery life in standard use. Designed for endurance, the Apple Watch Ultra 3 pushes that to 42 hours, and even 72 hours with low-power mode. It's the ideal choice for long outings or if you hate charging your watch every night.