The second generation design of the Stages Power Meter reflects a change in the plastic housing that covers the unit in order to further evolve our product into one that is slimmer, sleeker, and stronger. With this improvement, however, the basic electronics and function of the power meter remain the same. The power meter's electronics and means of measuring power have not changed from the original product we released in 2013. It also uses the same firmware and will continue to have the same ongoing firmware updates for improvements, added features, and bug fixes.