San Francisco startup Basis Science confirmed pricing and availability for its Basis health tracker today. The $199 watch-style gadget hits the market in early December, continuing the evolution of wearable fitness technology for everyday consumers.

With a complement of four sensors at its disposal, the Basis device is capable of measuring a wide range of biometric data in real time. First is an optical blood flow monitor that uses light to detect how hard your heart is beating. Like other fitness gizmos, the Basis watch has a three-axis accelerometer to record how much you move and how active you are. A perspiration sensor pays attention to sweat levels as well while a special thermometer logs skin and ambient temperature.