Electronic monitoring devices to monitor human physiological and environmental parameters that incorporate microprocessors, digital display in the nature of wearable technology devices, in the nature of wearable activity trackers and/or smartwatches, accelerometers, and associated computer memory and software, for detecting, storing and reporting human physiological and environmental parameters; AC adapters; USB (Universal serial bus) hardware and operating software; portable computers, computers worn on the wrist, portable media players, hand-held computers, wearable computers, cadence-measuring computers, electronic cadence monitors for all kinds of fitness activities; structural and replacement parts for the aforementioned goods; Software for storing and reporting human physiological and environmental parameters in the field of exercise, physical fitness, health, weight loss and athletics