Stainless Steel Water-Resistant Smart Rings & Bands, ranked by PFAS safety
All 22 bare stainless steel picks in our water-resistant smart rings & bands database, graded A to F and ranked safest first. 12 earn a buy-worthy grade.
Amazon
Tracking Ring
Stainless steel, titanium alloy, sapphire glass
Lower concern. Bare metal and glass components, no known PFAS coatings.
✓Naturally PFAS-free material
Fossil
Women's Raquel Stainless Steel Analog Watch
Stainless steel case, mineral/glass crystal, standard watch internals
Lower concern. Metal watch with minimal risk profile.
✓Bare metal or glass, no coating at all
Fossil
Women's Harlow Two-Hand Stainless Steel Watch Ring
stainless steel watch case and ring, mineral or glass crystal
Lower PFAS concern. Stainless steel watch with no surface treatments.
✓Bare metal or glass, no coating at all
Honor
Oura - Ring 5 - Smart Ring - Size Before You Buy with OR5 Sizing Kit - Size 11 - Silver - (2026)
titanium, stainless steel, sapphire crystal
Smart ring with minimal PFAS risk based on known materials.
⚠Brand says nothing about PFAS
Apple
Livup Smart Silver Ring
Titanium and stainless steel with silver coating
Lower concern ring, no known PFAS risk identified.
⚠Brand says nothing about PFAS
Apple
Ultrahuman Ring Air
Titanium, sapphire crystal, stainless steel
Lower concern. Inherent materials unlikely to contain PFAS.
⚠Brand says nothing about PFAS
Apple
Oura Ring 4 Ceramic Smart Ring with 8-Day Battery
Ceramic coating with titanium, stainless steel band
Ceramic core lowers PFAS risk, but coating composition unconfirmed.
⚠Brand says nothing about PFAS
Apple
Qalo QRNT Slim Smart Ring
Silicone band, stainless steel or similar core
Lower concern; smart ring with silicone band, no known PFAS risk factors.
⚠Brand says nothing about PFAS
Fossil
Women's Watch Ring
Stainless steel ring with glass crystal
Lower concern. Minimal PFAS risk from typical watch materials.
⚠Brand says nothing about PFAS
Fossil
Ladies' Watch Ring
Stainless steel case, glass crystal, standard watch band (likely leather or metal)
Lower concern. Typical watch materials carry minimal PFAS risk.
⚠Brand says nothing about PFAS
Fossil
Watch Ring Watch
Stainless steel band, mineral or acrylic crystal, leather/synthetic strap
Typical watch with no known PFAS-prone components.
⚠Brand says nothing about PFAS
Xiaomi
IMIKI Smart Ring
Titanium alloy body, likely stainless steel sensors
No known PFAS risk; minimal public material disclosure.
⚠Brand says nothing about PFAS
Fossil
Women's ES5245 Stainless Steel Analog Ring Watch
Stainless steel case, mineral or hardened glass crystal, no disclosed coatings
Stainless steel watch, lower concern.
⚠Stain-resistant finish
Fossil
Women's Stella Watch ES5319 Quartz Stretch Steel Watch Ring
Stainless steel band and case, quartz movement
Lower PFAS concern; basic watch with no special treatments noted.
⚠Stain-resistant finish
Fossil
Women's Glossy Enamel Ring Watch
Stainless steel case, glossy enamel dial coating
No public PFAS data available; enamel coating origin unclear.
⚠Undisclosed proprietary coating
Honor
Oura Ring 5 Smart Ring
Titanium, stainless steel, sapphire crystal with unspecified waterproof coating
Insufficient data on waterproof coating composition; Honor provides no PFAS transparency.
⚠Waterproof or stain-proof treatment
Amazfit
Smart Ring 3 Pro
Stainless steel body, unspecified waterproof coating
Skip until waterproof treatment is disclosed.
⚠Waterproof or stain-proof treatment
Samsung
Famous Tech Shop Smart Health Ring
Titanium/stainless steel band, sapphire crystal, waterproof coating (unspecified)
Waterproof coating raises concern; Samsung discloses nothing about PFAS.
⚠Waterproof or stain-proof treatment
Apple
Oura Ring 5 Smart Ring
Titanium, stainless steel, sapphire crystal with unspecified waterproof coating
Waterproofing coating composition undisclosed; unknown PFAS risk.
⚠Waterproof or stain-proof treatment
Apple
Oura Smart Ring 4
Titanium case, sapphire crystal, stainless steel, elastomer band with unspecified water-resistant coating
No public PFAS disclosure.
⚠Waterproof or stain-proof treatment
Amazon
SR08 Stainless Steel Smart Ring with Display – Fitness & Activity Tracker Silver
Stainless steel with unspecified waterproof/protective coating
Skip until coating composition disclosed; smart ring waterproofing often uses PFAS.
⚠Waterproof or stain-proof treatment
Xiaomi
Colmi R02 Smart Ring
Stainless steel body, unspecified waterproof coating/sealant
Smart ring coating composition undisclosed; waterproofing risk unclear.
⚠Waterproof or stain-proof treatment
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