Seiko Alpinist Glacier Mountaineer Extreme Dragon LE, reference SPB339J1

Seiko Alpinist Glacier Mountaineer Extreme Dragon LE Compatible Leather Straps

Reference: SPB339J1

Explore Seiko Alpinist Glacier Mountaineer Extreme Dragon LE, reference SPB339J1, and its leather strap measurements.

Case diameter
39.5 mm
Lug width
20 mm
Suggested buckle width
18 mm
Connection type
Check the watch attachment before ordering
Explore straps for 20 mm lugs

Strap compatibility

The right strap for Seiko Alpinist Glacier Mountaineer Extreme Dragon LE

Lug width: 20 mm. Compare the attachment and measurements with your existing strap before ordering.

Our recommended combinations

Choose your leather, stitching and length after confirming the watch lug width. Buckle sizes are suggestions.

The right length

How do you measure your wrist?

To choose the right strap length, measure your wrist where you normally wear your watch.

  1. Wrap a flexible measuring tape around your wrist without leaving a gap.
  2. Record the point where the tape meets in centimetres.
  3. If you are between sizes, ask for guidance based on your preferred fit.