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Multiple patches can be operated with the same smartphone.

Furthermore, Bluetooth Low Energy (BLE) standard temperature profile can be used to stream the data on any BLE compatible device, e.g. a smartwatch.
This sensor keeps accuracy also under non-perfect conditions as changing environmental temperature and convection (indoor and outdoor use) as well as during light physical activity. With its medical grade tape, the CORE is skin-friendly. For disinfection, the patch can be immersed in an alcohol bath.
This patch is not medCE or FDA certified and must not be used for medical nor diagnostic purposes.