STMICROELECTRONICS periferals are now been used as wearable during swimming tracking along with STM32F4 32 bit MCU. Xmetrics are using is to trace the swimming activity by using these wearable. This device is also termed as Xmetrics , it gets on the swimmer’s goggle band situated at the back of the head . From there it provides the best tracking position and real time audio feedback. It senses the body’s movement and makes up a precise data for the analysis by using Xmetrics algorithm which is further executed in a 32 bit microcontroller STM32F4. it detects and records the type of swimming its style and all number of stokes taken along with its frequency, flip turns , speed and total elapsed time.