Apple Watch Series 5 vs Series 6 – Which Should You Buy?
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You might be wondering if it’s worth upgrading your Apple Watch. Maybe you already own the Series 5 or you’re deciding between the Series 6 and a cheaper older model. These two watches look similar but offer some notable differences. Both have been fan favorites for their sleek design and smart features. So which one offers better value and performance for daily use? This comparison will help you decide whether the Apple Watch Series 6 is worth choosing over the Series 5.
Side by Side Comparison
| Feature | Apple Watch Series 6 | Apple Watch Series 5 |
|---|---|---|
| Display | Always-On Retina with 1000 nits brightness | Always-On Retina with 1000 nits brightness |
| Processor | S6 SiP, 64-bit dual-core | S5 SiP, 64-bit dual-core |
| RAM | 1GB | 1GB |
| Storage | 32GB | 32GB |
| Battery Life | Up to 18 hours | Up to 18 hours |
| Charging Speed | Faster charging (0-100% in ~1.5 hours) | Standard charging (~2.5 hours) |
| Blood Oxygen Sensor | Yes | No |
| ECG App | Yes | Yes |
| Altimeter | Always-On Altimeter | Standard Altimeter |
| Connectivity | Wi-Fi 5GHz, U1 Ultra Wideband | Wi-Fi 2.4GHz, No U1 chip |
| OS Compatibility | watchOS 7 and later | watchOS 6 and later |
Detailed Feature Comparisons
Design and Construction
Both models feature the same sleek design with rounded corners and thin bezels. They are available in 40mm and 44mm sizes and support the same interchangeable bands. The Series 6, however, introduced new case finishes like blue and red aluminum, giving users more color variety. Both offer the same level of water resistance and durability.
Display Quality
Each model has an Always-On Retina display with similar brightness levels, making it easy to view outdoors. The Series 6 slightly improves responsiveness in the Always-On state, which is noticeable when checking the time or glancing at notifications.
Performance and Processor
The Series 6 runs on the newer S6 chip, which is about 20% faster than the S5 chip in the Series 5. This results in smoother animations, faster app launches, and better efficiency. While both handle everyday tasks well, the Series 6 offers a performance edge for users who demand quick responsiveness.
Health and Fitness Tracking
Series 6 adds a Blood Oxygen sensor to the ECG and heart rate features already available on Series 5. This is a big upgrade for health-focused users. The always-on altimeter in the Series 6 also provides continuous elevation tracking, which is useful for hikers and runners.
Battery and Charging
Battery life remains the same on both, offering up to 18 hours. However, the Series 6 charges much faster. It can reach full charge in about 1.5 hours, compared to nearly 2.5 hours on the Series 5. This makes a big difference if you wear the watch overnight for sleep tracking.
Software and Features
Both support the latest watchOS updates, but the Series 6 is better optimized for new features due to its newer processor. Series 6 also includes the U1 Ultra Wideband chip, which enhances features like spatial awareness and AirTag tracking.
Connectivity and Sensors
The Series 6 supports 5GHz Wi-Fi and has a more advanced altimeter and U1 chip. These upgrades improve connectivity, location services, and tracking accuracy. The Series 5 lacks these enhancements, making it feel slightly more dated in tech terms.
FAQ
Is the Apple Watch Series 6 faster than the Series 5?
Yes, the Series 6 has a newer S6 chip that offers about 20% better performance than the S5 chip. This makes apps open faster and improves overall responsiveness.
Does the Series 6 have better battery life than the Series 5?
Both watches have the same 18-hour battery life, but the Series 6 charges significantly faster, which is helpful for users who wear it all day and during sleep.
Can both watches track sleep?
Yes, both Series 5 and Series 6 can track sleep using watchOS 7 or later. However, faster charging on the Series 6 makes it more practical for overnight use.
Does the Series 6 support Blood Oxygen monitoring?
Yes, only the Series 6 has a Blood Oxygen sensor. This feature allows users to monitor oxygen levels throughout the day and night.
Is the display on the Series 6 brighter than Series 5?
They both have 1000 nits of brightness, but the Series 6 improves visibility and responsiveness when the display is in its Always-On state.
Can both watches take ECG readings?
Yes, both models support the ECG app, which helps detect irregular heart rhythms.
Do they support the same bands and accessories?
Yes, the Apple Watch Series 5 and Series 6 use the same case sizes and are compatible with the same watch bands.
What is the Always-On Altimeter on the Series 6?
The Always-On Altimeter continuously tracks elevation changes throughout the day, which is useful for hikers, runners, and anyone tracking vertical movement.
Is the Series 5 still worth buying in 2025?
Yes, if you find it at a good discount and do not need Blood Oxygen monitoring or faster charging, the Series 5 still performs well for daily tasks.
Which watch is better for fitness tracking?
The Series 6 is better overall due to its Blood Oxygen sensor, Always-On Altimeter, and faster performance. These upgrades enhance the fitness experience.