A Mini Nano Sprayer that helps you to sanatize your surroundings ( cars, office desks, study table etc). It is durable and can be carried in purse, bags and bags.  It is rechargeable by USB with a polymer battery.

A pulse oximeter is a small, lightweight device used to monitor the amount of oxygen carried in the body. This noninvasive tool attaches painlessly to your fingertip, sending two wavelengths of light through the finger to measure your pulse rate and how much oxygen is in your system.

An oxygen concentrator is a device that concentrates the oxygen from a gas supply (typically ambient air) by selectively removing nitrogen to supply an oxygen-enriched product gas stream.