Smartlet Uno
Smartlet Uno
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Wear a Smartwatch with Your Sinn | Smartlet
Brand compatibility guide
Sinn
Wear a smartwatch
with your Sinn
Smartlet One is compatible with all Sinn 104, 556, and EZM references using 20mm to 22mm lug widths, natively supported with no adapter. Installation uses the standard spring-bar system - no modification to the watch, fully reversible in seconds.
Sinn makes tool watches in Frankfurt using aerospace materials and military-grade specifications. The 104 uses a tegimented steel case harder than standard 316L. The EZM series was developed with German special operations units. The argon-filled case prevents fogging. These are not features added for marketing - they address specific failure modes in demanding environments. Smartlet One was built with the same orientation: solve the problem of wearing two watches cleanly, via spring bars, without modification.
170+References
20mm / 22mmLug widths
18mm→24mmSmartlet range
Cómo funciona
Three steps to both watches on one wrist
01
Choose your strap
Smartlet One is your new strap. It replaces the original bracelet or strap on your Rolex using the same spring-bar system. Lug widths 20mm / 21mm are all natively supported.
02
Clip in your watch
Attach the Smartlet strap to your Rolex by fitting the spring bars into the lugs, exactly as with any standard strap change. No tools required. Fully reversible in seconds.
03
Clip in your smartwatch
Slide your smartwatch into the Smartlet module. It locks onto the strap module on the wrist side of your wrist. All sensors remain fully operational. Both watches run simultaneously.
Full database
Other Sinn references
170 references grouped into 15 model families. All compatible. Expand any group to see variants, references, and specifications.
103
Reference
Material
Dial
Lug
Smartlet
103 Sa
SIN-103SAB-BL01
Steel
Blue Sunburst
20mm
Compatible
SIN-103SAB-GN01
Steel
Green Sunburst
20mm
Compatible
SIN-103SAB-RD01
Steel
Red Sunburst
20mm
Compatible
SIN-103SAB-BR01
Steel
Brown
20mm
Compatible
SIN-103SAB-GR02
Steel
Grey Sunburst
20mm
Compatible
SIN-103SAB-CB01
Steel
Cobalt
20mm
Compatible
SIN-103SAB-IB01
Steel
Ice Blue
20mm
Compatible
SIN-103SAB-PP01
Steel
Purple
20mm
Compatible
SIN-103SAB-SD01
Steel
Sand
20mm
Compatible
SIN-103SAB-SM01
Steel
Salmon
20mm
Compatible
103 St
SIN-103-BK01
Steel
Black
20mm
Compatible
SIN-103-BL01
Steel
Blue
20mm
Compatible
SIN-103-WH01
Steel
White
20mm
Compatible
SIN-103-GN01
Steel
Green
20mm
Compatible
SIN-103-RD01
Steel
Red
20mm
Compatible
SIN-103-GR01
Steel
Grey
20mm
Compatible
SIN-103SSA-BK01
Steel
Black
20mm
Compatible
SIN-103SSA-WH01
Steel
White
20mm
Compatible
103 Ti
SIN-103TI-BK01
Titanium
Black
20mm
Compatible
SIN-103TI-BL01
Titanium
Blue
20mm
Compatible
104
Reference
Material
Dial
Lug
Smartlet
SIN-104-BK01
Steel
Black
20mm
Compatible
SIN-104-WH01
Steel
White
20mm
Compatible
SIN-104-BL01
Steel
Blue
20mm
Compatible
SIN-104-GN01
Steel
Green
20mm
Compatible
SIN-104-BR01
Steel
Brown
20mm
Compatible
SIN-104-GR01
Steel
Grey
20mm
Compatible
SIN-104-IB01
Steel
Ice Blue
20mm
Compatible
SIN-104-RD01
Steel
Red
20mm
Compatible
SIN-104-CB01
Steel
Cobalt
20mm
Compatible
SIN-104-PP01
Steel
Purple
20mm
Compatible
140
Reference
Material
Dial
Lug
Smartlet
SIN-140-CB01
Steel
Cobalt
22mm
Compatible
SIN-140-IB01
Steel
Ice Blue
22mm
Compatible
SIN-140-PP01
Steel
Purple
22mm
Compatible
SIN-140-BK01
Steel
Black
22mm
Compatible
SIN-140-WH01
Steel
White
22mm
Compatible
SIN-140-BL01
Steel
Blue
22mm
Compatible
SIN-140-GR01
Steel
Grey
22mm
Compatible
SIN-140-GN01
Steel
Green
22mm
Compatible
SIN-140-RD01
Steel
Red
22mm
Compatible
SIN-140-BR01
Steel
Brown
22mm
Compatible
SIN-140-BO01
Steel
Black/Orange
22mm
Compatible
SIN-140-CH01
Steel
Chrome
22mm
Compatible
SIN-140-BS01
Steel
Blue Sunburst
22mm
Compatible
SIN-140-PVD01
Pvd Black
Black
22mm
Compatible
SIN-140-GNS01
Steel
Green Sunburst
22mm
Compatible
SIN-140-SL01
Steel
Silver
22mm
Compatible
SIN-140-AW01
Steel
Arctic White
22mm
Compatible
SIN-140-BRS01
Steel
Brown Sunburst
22mm
Compatible
SIN-140-CB02
Steel
Cobalt Sunburst
22mm
Compatible
SIN-140-JD01
Steel
Jade
22mm
Compatible
556
Reference
Material
Dial
Lug
Smartlet
556 A
SIN-556A-BK01
Steel
Black
20mm
Compatible
SIN-556A-WH01
Steel
White
20mm
Compatible
SIN-556A-BL01
Steel
Blue
20mm
Compatible
SIN-556A-GN01
Steel
Green
20mm
Compatible
SIN-556A-GR01
Steel
Grey
20mm
Compatible
SIN-556A-SD01
Steel
Sand
20mm
Compatible
SIN-556A-CB01
Steel
Cobalt
20mm
Compatible
SIN-556A-SM01
Steel
Salmon
20mm
Compatible
SIN-556A-IB01
Steel
Ice Blue
20mm
Compatible
SIN-556A-TL01
Steel
Teal
20mm
Compatible
556 I
SIN-556I-BK01
Stainless Steel
Black
20mm
Compatible
SIN-556I-WH01
Steel
White
20mm
Compatible
SIN-556I-BL01
Steel
Blue Sunburst
20mm
Compatible
SIN-556I-RD01
Steel
Red
20mm
Compatible
SIN-556I-GN01
Steel
Green Sunburst
20mm
Compatible
SIN-556I-AN01
Steel
Anthracite
20mm
Compatible
SIN-556I-CP01
Steel
Copper
20mm
Compatible
SIN-556I-YL01
Steel
Yellow
20mm
Compatible
SIN-556I-IB01
Steel
Ice Blue
20mm
Compatible
SIN-556I-PP01
Steel
Purple
20mm
Compatible
756
Reference
Material
Dial
Lug
Smartlet
SIN-756-DP-BK01
Steel Tegimented
Black
20mm
Compatible
SIN-756-DP-GR01
Tegiment Steel
Grey
20mm
Compatible
SIN-756-DP-BL01
Tegiment Steel
Blue
20mm
Compatible
SIN-756-DP-WH01
Tegiment Steel
White
20mm
Compatible
SIN-756-DP-BR01
Tegiment Steel
Brown
20mm
Compatible
757
Reference
Material
Dial
Lug
Smartlet
SIN-757-UTC-BK01
Steel
Black
22mm
Compatible
SIN-757-UTC-BL01
Steel
Blue
22mm
Compatible
SIN-757-UTC-WH01
Steel
White
22mm
Compatible
SIN-757-UTC-GN01
Steel
Green
22mm
Compatible
SIN-757-UTC-GR01
Steel
Grey
22mm
Compatible
856
Reference
Material
Dial
Lug
Smartlet
SIN-856-UTC-BK01
Tegiment Steel
Black
20mm
Compatible
SIN-856-UTC-BL01
Tegiment Steel
Blue
20mm
Compatible
SIN-856-UTC-GN01
Tegiment Steel
Green
20mm
Compatible
SIN-856-UTC-GR01
Tegiment Steel
Grey
20mm
Compatible
SIN-856-UTC-WH01
Tegiment Steel
White
20mm
Compatible
SIN-856-UTC-SD01
Tegiment Steel
Sand
20mm
Compatible
SIN-856-UTC-CB01
Tegiment Steel
Cobalt
20mm
Compatible
SIN-856-UTC-PP01
Tegiment Steel
Purple
20mm
Compatible
SIN-856-UTC-BR01
Tegiment Steel
Brown
20mm
Compatible
SIN-856-UTC-IB01
Tegiment Steel
Ice Blue
20mm
Compatible
857
Reference
Material
Dial
Lug
Smartlet
SIN-857-UTC-BK01
Steel
Black
22mm
Compatible
SIN-857-UTC-BL01
Steel
Blue
22mm
Compatible
SIN-857-UTC-WH01
Steel
White
22mm
Compatible
SIN-857-UTC-GR01
Steel
Grey
22mm
Compatible
SIN-857-UTC-GN01
Steel
Green
22mm
Compatible
SIN-857-UTC-RD01
Steel
Red
22mm
Compatible
SIN-857-UTC-CB01
Steel
Cobalt
22mm
Compatible
SIN-857-UTC-IB01
Steel
Ice Blue
22mm
Compatible
SIN-857-UTC-BR01
Steel
Brown
22mm
Compatible
SIN-857-UTC-PP01
Steel
Purple
22mm
Compatible
Atelier
Reference
Material
Dial
Lug
Smartlet
UNQ-SIN-556-ENBL
White Gold
Enamel Blue
20mm
Compatible
UNQ-SIN-EZM-METG
Yellow Gold
Meteorite
22mm
Compatible
UNQ-SIN-104-RUB
Rose Gold
Ruby
20mm
Compatible
UNQ-SIN-103-SKS
Sapphire
Skeleton
20mm
Compatible
UNQ-SIN-U50-MET
Submarine Steel
Meteorite
20mm
Compatible
UNQ-SIN-U1-DRG
Submarine Steel
Engraved Dragon
22mm
Compatible
UNQ-SIN-EZM-JD
Tegiment Steel
Jade
22mm
Compatible
EZM
Reference
Material
Dial
Lug
Smartlet
EZM 1.1
SIN-EZM11-BK01
Steel
Black
22mm
Compatible
SIN-EZM11-GR01
Steel
Grey
22mm
Compatible
SIN-EZM11-WH01
Steel
White
22mm
Compatible
SIN-EZM11-BL01
Steel
Blue
22mm
Compatible
SIN-EZM11-GN01
Steel
Green
22mm
Compatible
SIN-EZM11-IB01
Steel
Ice Blue
22mm
Compatible
SIN-EZM11-RD01
Steel
Red
22mm
Compatible
SIN-EZM11-CB01
Steel
Cobalt
22mm
Compatible
SIN-EZM11-PP01
Steel
Purple
22mm
Compatible
SIN-EZM11-SD01
Steel
Sand
22mm
Compatible
EZM 3
SIN-EZM3-BK01
Steel
Black
20mm
Compatible
SIN-EZM3-BL01
Steel
Blue
20mm
Compatible
SIN-EZM3-GN01
Steel
Green
20mm
Compatible
SIN-EZM3-RD01
Steel
Red
20mm
Compatible
SIN-EZM3-AW01
Steel
Arctic White
20mm
Compatible
SIN-EZM3-GR01
Steel
Grey
20mm
Compatible
SIN-EZM3-IB01
Steel
Ice Blue
20mm
Compatible
SIN-EZM3-CB01
Steel
Cobalt
20mm
Compatible
SIN-EZM3-PP01
Steel
Purple
20mm
Compatible
SIN-EZM3-BR01
Steel
Brown
20mm
Compatible
Finanzplatzuhr
Reference
Material
Dial
Lug
Smartlet
SIN-FP6000-BK01
Steel
Black
20mm
Compatible
SIN-FP6000-WH01
Steel
White
20mm
Compatible
SIN-FP6000-BL01
Steel
Blue
20mm
Compatible
SIN-FP6000-GR01
Steel
Grey
20mm
Compatible
SIN-FP6000-GN01
Steel
Green
20mm
Compatible
SIN-FP6000-SM01
Steel
Salmon
20mm
Compatible
SIN-FP6000-CB01
Steel
Cobalt
20mm
Compatible
SIN-FP6000-IB01
Steel
Ice Blue
20mm
Compatible
SIN-FP6000-BR01
Steel
Brown
20mm
Compatible
SIN-FP6000-PP01
Steel
Purple
20mm
Compatible
Prototype
Reference
Material
Dial
Lug
Smartlet
Prototype 103
P-SIN-103-CER
Ceramic
Black
20mm
Compatible
Prototype EZM
P-SIN-EZM-TI
Titanium
Grey
22mm
Compatible
Prototype U1
P-SIN-U1-SAP
Sapphire
Transparent
22mm
Compatible
U1
Reference
Material
Dial
Lug
Smartlet
U1 Black
SIN-U1-BK01
Submarine Steel
Black
22mm
Compatible
U1 Blue
SIN-U1-BL01
Submarine Steel
Blue
22mm
Compatible
U1 Brown
SIN-U1-BR01
Submarine Steel
Brown
22mm
Compatible
U1 Cobalt
SIN-U1-CB01
Submarine Steel
Cobalt
22mm
Compatible
U1 Green
SIN-U1-GN01
Submarine Steel
Green
22mm
Compatible
U1 Grey
SIN-U1-GR01
Submarine Steel
Grey
22mm
Compatible
U1 Ice
SIN-U1-IB01
Submarine Steel
Ice Blue
22mm
Compatible
U1 Purple
SIN-U1-PP01
Submarine Steel
Purple
22mm
Compatible
U1 Red
SIN-U1-RD01
Submarine Steel
Red
22mm
Compatible
U1 White
SIN-U1-WH01
Submarine Steel
White
22mm
Compatible
U50
Reference
Material
Dial
Lug
Smartlet
U50 Black
SIN-U50-BK01
Submarine Steel
Black
20mm
Compatible
U50 Cobalt
SIN-U50-CB01
Submarine Steel
Cobalt
20mm
Compatible
U50 Green
SIN-U50-GN01
Submarine Steel
Green
20mm
Compatible
U50 Grey
SIN-U50-GR01
Submarine Steel
Grey
20mm
Compatible
U50 Ice
SIN-U50-IB01
Submarine Steel
Ice Blue
20mm
Compatible
U50 Purple
SIN-U50-PP01
Submarine Steel
Purple
20mm
Compatible
U50 Red
SIN-U50-RD01
Submarine Steel
Red
20mm
Compatible
U50 Salmon
SIN-U50-SM01
Submarine Steel
Salmon
20mm
Compatible
U50 Sand
SIN-U50-SD01
Submarine Steel
Sand
20mm
Compatible
U50 White
SIN-U50-WH01
Submarine Steel
White
20mm
Compatible
UX
Reference
Material
Dial
Lug
Smartlet
SIN-UX-BK01
Steel
Black
22mm
Compatible
SIN-UX-BL01
Steel
Blue
22mm
Compatible
SIN-UX-WH01
Steel
White
22mm
Compatible
SIN-UX-GR01
Steel
Grey
22mm
Compatible
SIN-UX-GN01
Steel
Green
22mm
Compatible
SIN-UX-RD01
Steel
Red
22mm
Compatible
SIN-UX-IB01
Steel
Ice Blue
22mm
Compatible
SIN-UX-CB01
Steel
Cobalt
22mm
Compatible
SIN-UX-PP01
Steel
Purple
22mm
Compatible
SIN-UX-BR01
Steel
Brown
22mm
Compatible
Relojes inteligentes compatibles
Smartwatches to pair with your Sinn
Wear your smartwatch simultaneously with your Sinn via Smartlet One. Lug widths 18mm to 24mm natively supported.
Apple Watch
View pairing guide →
Samsung Galaxy Watch
View pairing guide →
Garmin Fenix
View pairing guide →
Garmin Forerunner
View pairing guide →
Garmin Venu
View pairing guide →
Google Pixel Watch
View pairing guide →
Withings ScanWatch
View pairing guide →
Polar Vantage
View pairing guide →
Fitbit Charge
View pairing guide →
Huawei Watch GT
View pairing guide →
Coros
View pairing guide →
Suunto
View pairing guide →
Whoop
View pairing guide →
Questions
Frequently asked questions
Does Smartlet work with Sinn watches?
Yes. Sinn references from 20mm to 22mm lug width are natively supported by Smartlet One.
Will Smartlet affect Sinn's special case treatments?
No. Smartlet attaches via the spring-bar slots. Tegiment hardening, HYDRO technology, and oil-filled cases are unaffected.
Which Sinn references are compatible?
All 20mm and 22mm references - 556, 140 St, 857, EZM series, U1 - 170+ references covered.
