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PIONEER/417 ES butterfly folding clasp for a leather strap, stainless steel
incl. VAT
Size guide for straps
To determine your strap length, you can either measure your wrist circumference and determine your strap length in the table or use our templates, which you can download below.
Please find our templates for download here:
Instructions: Print out the document and make sure that no page scaling is preset. Cut out the template along the red dotted line. Place the watch on your wrist and pull the strap through the cut slit. Make sure that the template is not too tight on your wrist and that you have a little space between your fingers. Please note that leather underlays result in a longer strap length.
Strap lengths:
PIONEER/417 ES: S = (10,5 / 6,5 cm) M = (11,5 / 7,5 cm) L = (12,5 / 9,0 cm)
PRIMUS: S = (9,5/7,5 cm) M = (10,5/8,5 cm) L = (12,0/10,0 cm)
Racemaster: S= (10,4/6,4 cm) M= (11,4/7,4 cm) L= (12,4/8,4 cm)
| Model | Lug width | Wrist circumference S-strap | Wrist circumference M-strap | Wrist circumference L-strap |
| General recommendation, regardless of model and strap | - | 13.0 cm - 16.0 cm | 16.5 cm - 18.5 cm | 19.0 cm - 22.0 cm |
| PIONEER Silva | 20 mm | - | 15.0 cm - 21.0 cm | 18.0 cm - 23.5 cm |
| 417 ES 1954 (with Bund strap) | 20 mm | - | 14.0 cm - 20.0 cm | 17.0 cm - 22.0 cm |
| PIONEER Mk I, Mk II, TachyTele, Preventor9 | 20 mm | 13.0 cm - 17.0 cm | 14.0 cm - 20.5 cm | 17.0 cm - 22.5 cm |
| Preventor HD12™ | 20 mm | - | 14.0 cm - 20.0 cm | 17.0 cm - 22.0 cm |
| 417 ES (with Bund strap) | 21 mm | - | 14.0 cm - 20.0 cm | 18.0 cm - 23.0 cm |
| PIONEER TwinControl, MonoControl | 21 mm | 13.0 cm - 19.0 cm | 15.5 cm - 21.5 cm | 19.0 cm - 23.5 cm |
| PIONEER One | 21 mm | 13.0 cm - 19.0 cm | 15.5 cm - 20.5 cm | 18.0 cm - 23.5 cm |
| PIONEER TwinDicator, MonoScope | 23 mm | 13.0 cm - 19.0 cm | 15.5 cm - 21.5 cm | 18.0 cm - 24.0 cm |
| RACEMASTER | 23 mm | 13.0 cm - 18.0 cm | 16.5 cm - 21.5 cm | 18.5 cm - 23.5 cm |
| PRIMUS leather | 24 mm | 13.0 cm - 17.5 cm | 16.0 cm - 20.0 cm | 18.0 cm - 22.5 cm |
| PRIMUS rubber | 24 mm | - | 14.0 cm - 18.5 cm | 17.5 cm - 21.5 cm |
| PRIMUS textile | 24 mm | - | 14.5 cm - 19.5 cm | 17.5 cm - 21.5 cm |
Description
STRAPS
PIONEER/417 ES butterfly folding clasp for a leather strap, stainless steel
The practical clasp for quickly tightening the watch fits all PIONEER and 417 ES models on a leather strap with a strap width of 20 mm and 21 mm. The clasp owes its name ‘butterfly folding clasp’ to its double hinges (it opens on both sides) and is often also called a butterfly folding clasp.
To convert your watch, you will need to remove your old clasp and attach the new butterfly folding clasp. We can do this for you on request.
