The iPhone 6s is a smartphone model produced by Apple Inc. It was released in September 2015 and served as the successor to the iPhone 6. Here are some key features and details about the iPhone 6s:

1. Design and Display: The iPhone 6s features a 4.7-inch Retina HD display with a resolution of 1334 x 750 pixels. It has an aluminum unibody design with rounded edges and is available in various color options, including Space Gray, Silver, Gold, and Rose Gold.

2. Performance: The iPhone 6s is powered by Apple's A9 chip, which provides improved performance and energy efficiency compared to its predecessor. It also has an M9 motion coprocessor for enhanced motion tracking and sensor capabilities.

3. Camera: The iPhone 6s features a 12-megapixel rear camera with autofocus, optical image stabilization, and the ability to record 4K videos. It also has a 5-megapixel front-facing camera for selfies and FaceTime calls.

4. 3D Touch: One of the notable features introduced with the iPhone 6s is 3D Touch. It allows the display to sense different levels of pressure, enabling users to access additional features and shortcuts by pressing harder on the screen.

5. Touch ID: The iPhone 6s includes Touch ID, Apple's fingerprint recognition technology, which allows you to securely unlock your device and authenticate various actions such as making purchases or accessing sensitive information.

6. Storage Options: The iPhone 6s is available in different storage capacities, including 32GB and 128GB. However, please note that the availability of specific storage options may vary depending on the region and the time of purchase.

7. Operating System: The iPhone 6s originally shipped with iOS 9 and has since received multiple iOS updates. However, it's worth noting that software support for older iPhone models may eventually end as newer iOS versions are released.

8. Battery Life: The iPhone 6s generally offers decent battery life, capable of lasting through a day of moderate usage. However, battery performance can vary depending on individual usage patterns and settings.

While the iPhone 6s is not the latest iPhone model available, it still provides a solid performance, a capable camera, and features like 3D Touch and Touch ID. However, if you are considering purchasing a new iPhone, it's worth exploring the latest models as they offer more advanced features and improved performance.