The Sprint series by Pro Tech are great small carry California Legal automatic knives. Don't let the small size fool you though, these are premium knives that really pack a punch when it comes to quality. The handles are an anodized aluminum that come in a variety of colors, the blade is an S35VN and comes either black or satin and it is finished off with a deep carry clip for discreet carry.
This Sprint is blue aluminum and a stonewash/satin plain edge blade.
Please check your local laws regarding the purchase and carry of automatic knives.