# Apple Watch Series 4

> smartwatch designed by Apple, Inc.

**Wikidata**: [Q56599236](https://www.wikidata.org/wiki/Q56599236)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Apple_Watch_Series_4)  
**Source**: https://4ort.xyz/entity/apple-watch-series-4

## Summary
The Apple Watch Series 4 is a smartwatch designed by Apple Inc., part of the Apple Watch series. It features the Apple S4 system-in-package (SiP) and offers an 18-hour battery life. Released as a successor to the Apple Watch Series 3, it runs on watchOS and emphasizes health and fitness tracking.

## Key Facts
- **Developer**: Apple Inc.
- **Series**: Part of the Apple Watch line (inception: 2015-04-24).
- **Processor**: Apple S4 SiP.
- **Battery Life**: Up to 18 hours.
- **Operating System**: watchOS.
- **Preceded By**: Apple Watch Series 3.
- **Succeeded By**: Apple Watch Series 5.

## FAQs
### Q: What is the Apple Watch Series 4 known for?
A: It is recognized for its Apple S4 SiP, 18-hour battery life, and integration with watchOS, building on Apple’s focus on health and fitness tracking.

### Q: Is the Apple Watch Series 4 compatible with older iPhone models?
A: While specific compatibility details are not provided in the source material, Apple Watches typically require recent iOS versions for full functionality.

### Q: What distinguishes the Series 4 from its predecessors?
A: It introduced the Apple S4 SiP and maintained an 18-hour battery life, aligning with Apple’s iterative improvements in hardware and software.

## Why It Matters
The Apple Watch Series 4 represents a key iteration in Apple’s smartwatch lineup, emphasizing technological refinement with the S4 SiP and consistent battery performance. As part of a series that popularized smartwatches in consumer electronics, it contributed to Apple’s ecosystem of health-focused devices. By running watchOS, it supported a wide range of apps and services, reinforcing the Apple Watch’s role in daily activity tracking and notification management. Its development reflects Apple’s strategy of incremental hardware upgrades and software integration, maintaining relevance in a competitive wearable tech market.

## Notable For
- Utilizes the Apple S4 SiP for enhanced performance.
- Offers an 18-hour battery life, balancing functionality and daily usability.
- Part of the Apple Watch series, a flagship line in consumer smartwatches.
- Runs watchOS, enabling integration with iOS devices and apps.

## Body
### Release and Development
The Apple Watch Series 4 was developed by Apple Inc. as part of the Apple Watch series, succeeding the Series 3 and preceding the Series 5. It leverages the Apple S4 SiP, a custom-designed system-in-package, to drive its operations.

### Technical Specifications
- **Processor**: Apple S4 SiP.
- **Battery Life**: Up to 18 hours on a single charge.
- **Operating System**: watchOS, ensuring compatibility with iOS devices and access to the App Store.

### Legacy and Impact
As a member of the Apple Watch family, the Series 4 continued Apple’s focus on health and fitness tracking, albeit without explicit mention of groundbreaking features like an ECG app in the provided source material. Its hardware and software integration underscored Apple’s commitment to refining its smartwatch lineup, catering to users seeking a blend of style, functionality, and ecosystem synergy.

## Schema Markup
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  "@type": "Thing",
  "name": "Apple Watch Series 4",
  "description": "Smartwatch designed by Apple, Inc., part of the Apple Watch series with an Apple S4 SiP and 18-hour battery life.",
  "sameAs": [
    "https://www.wikidata.org/wiki/Q56704117",
    "https://en.wikipedia.org/wiki/Apple_Watch_Series_4"
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  "additionalType": "Smartwatch model"
}

## References

1. [Source](https://www.knowyourmobile.com/wearable-technology/apple-watch-battery-comparison-chart-size-battery-life-and-charge-time/)