Data processors; Downloadable software application for downloading DVR-recorded content for viewing on smartphones; Downloadable cloud-based software for perspiration data recording; Downloadable computer software for perspiration data recording; Smart watches; Smartphones; Wearable activity trackers; Apparatus for recording, transmission, processing and reproduction of sound, images or data; Calculating machines and data processing equipment; Calculating machines, data processing equipment and computers; Computer application software for mobile phones, namely, software for mobile phones; Computer application software for mobile phones, namely, software for mobile phones; Downloadable software for connecting, operating, and managing networked warable activity trackers in the internet of things (IoT); Instruments for detecting and measuring two-dimensional distribution of force and pressure; Pressure measuring apparatus; Pressure measuring apparatus; Underwater breathing apparatus