Loop Smart Screen-Free Wearable Health Band vs Water Resistant Watch Model 8R500 - Men: which is safer?

Where these two actually differ

• We flag Elastomer additives (colorants, antioxidants, plasticizers), Allergenic dyes or pigments in band coloring, Bacterial or fungal growth in band crevices and Thermal degradation of elastomer when overheated on the Polar and not on the TomTom.
• We flag Polymer case and band degradation and Bacterial or mold growth in seals and band on the TomTom and not on the Polar.
• The Polar is Elastomer band where the TomTom is On watch case and band, which is most of the difference in these two grades.
• These two are level, close enough that price and fit should decide it rather than our grade.