Samsung Galaxy Watch band sizes

Smartwatch line20 references

Band systems by model

Samsung Galaxy Watch: the band size or band system of each model, with 20 references listed.

Indicative information. Check your watch before buying a strap: whatsmylugwidth.com is not responsible for an incorrect size. Report an error

20 Samsung Galaxy Watch references

The story of the Samsung Galaxy Watch

Generations and strap changes

  1. 2026
    Watch9 and Watch Ultra2

    Unveiled July 22, 2026: Watch9 in 40mm and 44mm, and a single 47mm Watch Ultra2.

  2. 2025
    Galaxy Watch8 and Classic

    Watch8 and Watch8 Classic introduced the Dynamic Lug System for band changes at the click of a button.

    Dynamic Lug replaces the long-standing 20mm standard; older Galaxy and generic 20mm bands no longer fit.

  3. 2023
    Galaxy Watch6

    Watch6 brought a display about 20% larger; the Classic kept a rotating bezel.

    A button replaced the spring-bar structure for one-click band changes.

  4. 2021
    Galaxy Watch4

    The Watch4 and Watch4 Classic switched to Wear OS, developed with Google.

  5. 2020
    Galaxy Watch3

    A steel round-bezel watch in 41 mm or 45 mm, plus a titanium model.

  6. 2019
    Galaxy Watch Active

    A bezel-less, lighter aluminium model with a 28.1 mm display.

    It used a 20 mm fluoroelastomer band.

  7. 2018
    Galaxy Watch

    The first Galaxy Watch kept the circular bezel, in 42 mm and 46 mm sizes.

  8. 2015
    Gear S2

    Samsung's first smartwatch with a circular display; it had the rotating bezel that became a hallmark of the Classic line.

  9. 2013
    Galaxy Gear

    The Galaxy Gear had a 1.9-megapixel camera attached to the strap.

    The camera was attached to the strap.

Firsts and innovations

Samsung says sleep apnea detection on Galaxy Watch earned the world's first De Novo authorisation of its kind from the US FDA in 2024.

The Galaxy Watch8 series, the Watch9's predecessor, was the first smartwatch with Wear OS 6 and Gemini. Samsung says it was also the first to bring an Antioxidant Index to a smartwatch.

Samsung presented the Watch8 series as the first smartwatch with Wear OS 6 and Gemini built in. It also says the series was the first to bring an Antioxidant Index to a smartwatch.

Samsung says its Dynamic Lug System, used on the 2024 Galaxy Watch Ultra, lets wearers easily switch straps.

The 2024 Galaxy Watch Ultra was Samsung's first product with a 3nm processor. With the Watch7, it was among the first Galaxy watches with dual-frequency GPS.

FAQ

Which bands fit the Samsung Galaxy Watch?

It depends on the generation and case size. Galaxy Watch9: Dynamic Lug System. Galaxy Watch8 Classic: Dynamic Lug System. Galaxy Watch Ultra2: Dynamic Lug System.

Help

What is lug width?

The gap between the two lugs that hold the strap, in millimetres. A new strap must match it exactly: 20 mm lugs take a 20 mm strap.

Measure it in 30 seconds

  1. Take the strap off, or look at the back of it: many straps print their width.
  2. Measure the inside gap between the lugs with a caliper or a millimetre ruler.
  3. Round to the nearest whole millimetre. Most watches use 18, 20 or 22 mm.

Strap, quick release or system?

Most watches use spring bars, so any strap of the right width fits. Many smartwatches use their own band system instead, such as Apple Watch bands or Garmin QuickFit.