Ernest Borel Heartful

    The strap size depends on the reference. Yours is engraved on the case back or between the lugs at 6 o'clock.

    14 or 15 mm

    Listed by the maker

    30 to 32 mm cases

    Filter references by lug width
    Find your exact reference

    Official page: Ernest Borel

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

    Collection8 references
    14 mm
    Illustration drawn to scale: 32 mm case, 14 mm lugs

    8 Ernest Borel Heartful references

    Ernest Borel Heartful references in our database. Each card says where its width comes from: listed by the maker (linked to the maker's page in the details), two independent sources agree, or listed in our database and not yet verified by us.

    • N0520L0A‑MN2N

      Heartful 30mm Automatic Watch

      15 mm

      Maker

      30 mm

    • N0520L0E‑MS5S

      Heartful 30mm Automatic Watch

      15 mm

      Maker

      30 mm

    • N0520L0F‑MR2L

      Heartful 30mm Automatic Watch

      14 mm

      Maker

      30 mm

    • N0519L0A‑MY4N

      Heartful 32mm Automatic Watch

      14 mm

      Maker

      32 mm

    • N0519L0B‑MD4L

      Heartful 32mm Automatic Watch

      14 mm

      Maker

      32 mm

    • N0520B0A‑MN2N

      Heartful 32mm Automatic Watch

      14 mm

      Maker

      32 mm

    • N0520B0D‑MS6L

      Heartful 32mm Automatic Watch

      14 mm

      Maker

      32 mm

    • N0520B0F‑MR2L

      Heartful 32mm Automatic Watch

      14 mm

      Maker

      32 mm

    FAQ

    What lug width does the Ernest Borel Heartful use?

    Ernest Borel Heartful lug width: 14 or 15 mm depending on the reference. The most common is 14 mm (6 of the 8 references with a listed width in our database). Find your exact reference in the table below. The Ernest Borel Heartful ref. N0520L0F-MR2L, N0519L0A-MY4N and 4 more take 14 mm (listed by the maker). The Ernest Borel Heartful ref. N0520L0A-MN2N and N0520L0E-MS5S take 15 mm (listed by the maker).

    Do all Ernest Borel Heartful references take the same strap?

    No. 2 different lug widths appear across the line, often by case size or generation. Check the reference engraved on the case back or between the lugs.

    Where do these Ernest Borel Heartful lug widths come from?

    From our database, which lists 8 Ernest Borel Heartful references, 8 of them with a listed width. Each reference card says whether the maker lists the width, two independent sources agree on it, or it is not yet verified.

    Other Ernest Borel collections

    All Ernest Borel collections

    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.