Versa 3 Smart Watch vs Classic Plus Stainless Steel Magnetic Closure WatchBand for Apple Watch: which is safer?

Where these two actually differ

• We flag Nickel or trace heavy metals in aluminum alloy case, Elastomer band degradation and plasticizer leaching, Bacterial or fungal growth in band material and Allergic contact dermatitis from unknown additives on the Fitbit and not on the X-Doria.
• We flag Nickel leaching from stainless steel on the X-Doria and not on the Fitbit.
• The Fitbit is Aluminum case, elastomer band 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 Fitbit grade, at 45% confidence against 82%, because it discloses less.