Apple Smart Battery Case for iPhone 6 or 6S (hands-on pictures)

Following in the footsteps of Mophie and other third-party accessory makers, Apple has unveiled its very own iPhone Smart Battery Case. But at $99 in the US, £79 in the UK and AU$165 in Australia, it's more expensive than competing models.

The case fits the iPhone 6S and the older iPhone 6.

It's available in two colors: charcoal gray (shown here) and white.

The Smart Battery Case promises up to 18 hours of 4G LTE Web browsing, up from 10 hours for the iPhone 6S on its own -- an 80 percent boost. (The specific battery capacity is 1,877 mAh.)

The soft-touch rubbery silicone case is made of the same material as Apple's Smart Covers and cases, and slip-on iPhone accessories, lined with soft microfiber on the inside.

Unlike most competing battery cases, this is a single unit, not a two-part snap-together design.

The rectangular battery bulges out from the back.

This Apple model can accept Lightning cables, unlike rival cases that use Micro-USB.

The headphone port pass-through at the bottom won't fit all headphone cords. Apple suggests a separately sold extension connector; there isn't one included in the case. Mophie throws one in with its battery cases.

Read our full review of the Apple Smart Battery Case.