The torque display scale shows the exact torque setting. There are bit and socket adapters that allow for using the torque driver in a variety of applications.
As sold and delivered it is useless. That is, unless you "do" 4mm bits. It comes with one bit holder looking for 4mm, not the standard 1/4" bits. The standard in male or female is available from Wiha, but Amason ships this item with just the 4mm holder. I don't see how it would work even for them, as it's round, but then I don't "do" 4mm. This complaint has been made many times but the packaging hasn't changed and Amazon's description still carries NO Warning. No excuse for this.