Abstarct: Abstract Analyzing and evaluating the efficiency and forecasting changes is very important for evaluating the performance of decision-making units and planning to improve their performance, so that the main competition of industrialists is on the speed of changes. The purpose of this research is to evaluate the efficiency of smart watches. And also forecasting the rate of technological changes in the technology of these watches.In this study, using the non-parametric method of envelope analysis Data and technology forecasting using data envelopment analysis to evaluate changes It is technologically developed in smart watches or any smart device.At first, the efficiency of 74 models of Smartwatches released during the years 2016 to 2021 are calculated in the year of release and then Using technology forecasting using data envelopment analysis, the rate of change of each device and the average Changes in total devices have been investigated and calculated, and finally using the time series for 2022 forecasted.