Jaeger-LeCoultre · Master Extreme
Strap for Jaeger-LeCoultre Master Extreme 186T770
The Master Compressor Diver Chronograph Titanium / Rubber Bracelet takes 20 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.
- 4.8 out of 5 · 269 reviews
- Ships in 1–3 working days
- Worldwide shipping
- 30-day returns
- 12-month warranty on manufacturing defects
- Hand-stitched in Milan
Lug width

Your watch with our straps









Calf, Orange
Grand Cavalier Leather Strap Orange
€120
★ 4.9 · 12
1 / 83
Real photos of the strap and the case. No generated images.
What length do I need?
Measure your wrist with a tailor's tape or a piece of string, comfortably snug.
| Wrist circumference | Length (long side / short side) |
|---|---|
| 15.0–16.4 cm | 120 / 70 mm |
| 16.5–17.8 cm | 125 / 75 mm |
| 17.9–19.0 cm | 130 / 80 mm |
| 19.1–20.3 cm | 135 / 85 mm |
| 20.4–21.6 cm | 140 / 85 mm |
| 21.7–22.9 cm | 145 / 90 mm |
The ready-to-wear strap is 115 × 75 mm. For a smaller or larger wrist I make it in the right length: order your length.
What I'm asked about the Jaeger-LeCoultre Master Extreme 186T770
What strap size does the Jaeger-LeCoultre Master Extreme 186T770 take?
The Jaeger-LeCoultre Master Extreme 186T770 needs 20 mm between the lugs, usually 16 mm at the buckle. It's the size I've been fitting on it for years.
Can the strap on the Jaeger-LeCoultre Master Extreme 186T770 be changed?
Yes. It has spring bars between the lugs: with the right tool the strap comes off in a minute. If you'd rather not risk a scratch, I do it in the workshop.
Can I put a leather strap on the Jaeger-LeCoultre Master Extreme 186T770?
Yes, in 20 mm leather, as long as you don't wear it in the water: leather doesn't like the sea or the pool. For days in the water, rubber. On a 44 mm diver I go for a full-thickness strap, not a thin one.
Which strap do you recommend for the Jaeger-LeCoultre Master Extreme 186T770?
Rubber if you wear it in the water; otherwise a 20 mm calf strap, full thickness. You'll find it ready in the 20 mm collection. If you'd rather have something built on your wrist, the Casati atelier.
More Master Extreme
- Master Compressor Geograpic Stainless Steel22 mm
- Master Compressor Dualmatic Stainless Steel21 mm
- Master Compressor Chronograph Pink Gold Bracelet20 mm
- Master Compressor Chronograph Pink Gold Bracelet Grey20 mm
- Master Compressor Chronograph Pink Gold20 mm
- Master Compressor Chronograph Pink Gold Grey20 mm
- Master Compressor Chronograph Stainless Steel Bracelet20 mm
- Master Compressor Chronograph Stainless Steel20 mm
More Jaeger-LeCoultre in 20 mm
- Master Ultra Thin Moon 34 Pink Gold / Diamond / Eggshell / AlligatorMaster Ultra Thin
- Master Ultra Thin Moon 34 Pink Gold / Eggshell / AlligatorMaster Ultra Thin
- Master Ultra Thin Moon 34 Stainless Steel / Diamond / Silver / AlligatorMaster Ultra Thin
- Master Ultra Thin Moon 34 Stainless Steel / Silver / AlligatorMaster Ultra Thin
- Master Ultra Thin Calendar White GoldMaster Ultra Thin
- Master Ultra Thin Small Second Pink Gold DiamondMaster Ultra Thin
For changing the strap
The next step
The right strap isn't chosen. It is built, together.
From the atelier appointment to delivery, every step is made for those who know that things done well take time. Rare leathers, one piece at a time, eighteen months of warranty.
Request an appointment →Casati Milano · Via XX Settembre 15, Milan · by appointment only
The atelier's website: casatimilano.com
