Brite R450 Heart Rate Watch vs Classic Plus Stainless Steel Magnetic Closure WatchBand for Apple Watch: which is safer?

Where these two actually differ

• We flag Plastic and rubber degradation from sweat and heat, Bacterial growth in band seams and crevices, Allergic contact dermatitis from rubber or plasticizer residue and Waterproof seal integrity loss over time on the Lifetrak and not on the X-Doria.
• We flag Nickel leaching from stainless steel on the X-Doria and not on the Lifetrak.
• The Lifetrak is Plastic band, rubber strap where the X-Doria is Stainless steel, magnetic closure, 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.
• We are less certain about the Lifetrak grade, at 35% confidence against 82%, because it discloses less.