I would just save up and get a wideband. I used both and the wideband is worth the extra cost. Get one with a digital readout. The color band indicators are worthless in my opinion. Too hard to read at speed while tuning.
It came with the car, I was just wondering WTH it was haha. It seems kinda pointless to me? I also own a innocate LC1 wideband that is going to be replacing that one.