1. All Galaxy Watches. https://www.samsung.com/levant/watches/all-watches/.
2. American National Standards Institute (ANSI) specified error criterion for cardiac monitors and HR meters. https://studylib.net/doc/18662295/ansi-aami-ec13-2002--cardiac-monitors-heart-rate-meters-...
3. Apple Watch Series 8. https://www.apple.com/apple-watch-series-8/.
4. Electromagnetic induction. https://www.techtarget.com/whatis/definition/electromagnetic-induction.
5. Electromagnetic leakage of microwave oven. https://www.bag.admin.ch/dam/bag/en/dokumente/str/nis/faktenblaetter-emf/faktenblatt-mikrowellenofen.pdf.download.pdf/faktenblatt%20mikrowellenofen%20e.pdf.