Men's Explorist HR Gen 4 Smartwatch vs Classic Plus Stainless Steel Magnetic Closure WatchBand for Apple Watch: which is safer?

Where these two actually differ

• We flag Nickel dermal sensitization from stainless steel contact, Battery and electrical hazard, Silicone or elastomer band degradation and Mineral crystal glass degradation and splinter risk on the Fossil and not on the X-Doria.
• We flag Nickel leaching from stainless steel on the X-Doria and not on the Fossil.
• The Fossil is Stainless steel case 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 Fossil grade, at 35% confidence against 82%, because it discloses less.