Every manufacturer is trying to get ahead somehow and adding free accessories to the base packages of the product is not bad way to achieve that. Just like Uhans are doing with their Uhans S1 model.
Uhans S1 comes with even two extras in the box and both the silicone case and the protective glass are good to have right away as a bonus. The protective glass is even coated with the oleophobic layer to fight against the smudges has the 2.5D curving.
Such accessories are normally available for about $15 so it’s a value added bonus to have those in the base package of the Uhans S1. You can get the phone with the included goodies for example here.