Smartphone maker HTC has seen its sales plummet recently that has resulted in tumbling profits for the company, as it loses market share to Apple and Samsung. HTC are looking to turn things around though by releasing fewer but better handset ranges to consumers, and recently announced the HTC One range of smartphones. Today we have news of the HTC One S Sina Weibo dedicated Android smartphone.

The company had got many fans of its handsets used to the idea of having only three navigation buttons on the HTC One range, but HTC has done an about turn and added a fourth button according to Engadget. This is only for users in mainland China though, and the device is following the HTC Desire range, otherwise known as the Dragon in the country.

HTC have introduced a version of the HTC One S that has been designed to work with China’s popular Twitter alternative, Sina Weibo. The HTC One S variant for China will feature a dedicated Sina Weibo button, alongside a set of built in software from the popular micro blogging service.

Other than that the handset is exactly the same with the Snapdragon S4 1.5 GHz dual core processor powering a 4.3-inch qHD AMOLED display, 1GB of RAM and 16GB of on board storage. Camera wise the device comes packing an eight megapixel unit with f/2.0 lens, and the HTC One S will come running Android Ice Cream Sandwich straight out of the box. It will also feature the latest HTC Sense 4.0 Android overlay.

Consumers in China have the choice of either black or gunmetal blue colour schemes, and the handset will retail for around 4,688 Yuan, or approximately $740. Below you can see a hands on video of the HTC One S in China that has been provided by Engadget China for English audiences to watch.