The Karbonn Titanium S1 runs the 1.2GHz quad-core processor and 1GB of RAM, but features a smaller 4.5 inch IPS screen, which retains the qHD resolution. The camera also gets a slight pixel downgrade from the S5, going down from 8MP to 5MP in the S1. It features a VGA front camera. The 9.25mm-thick S1 also has a smaller 1600mAh battery as compared to the S5, rated to deliver 4 hours of talktime, and 200 hours of standby time.