The embodiments disclose a new type of multi-function smart wristlets, in which a variety of electronic, optoelectronic, and thermal sensors are embedded. These sensors will collect data through various signals from both a person and the environment in order to perform many functions to help people improve their health it also tells people of the environmental conditions in order for them to make the right decision about their outdoor activities. Also, this wristlet can be a sensor-key to open cars, house doors, garage doors, and so on. It also works as music player to play music in wireless headphones through Bluetooth function on the wristlet. In addition, at night it can also measure your steady heartbeat and blood flow rate along with breathing conditions through the detector sensors. This can monitor a persons health and sleeping quality. This function can also help to alert other family members through an app downloaded on familys phone if a condition appears in sleep or heart rate becomes irregular.
