Bremont · Altitude
Bremont Altitude Perpetual Calendar GMT 42 mm
Reference alt42-per-ti-bl-b · GMT / travel · 42 mm
Specifications
- Reference
- alt42-per-ti-bl-b
- Family
- Altitude
- Category
- GMT / travel
- Status
- Current
- Case material
- Titanium
- Case diameter
- 42 mm
- Case thickness
- 12.65 mm Official
- Lug-to-lug
- 49.62 mm Official
- Lug width
- 22 mm Official
- Water resistance
- 100 m
- Bezel
- —
- Calibre
- BHC9192MH Official
- Power reserve
- 50 h
Official product page · retrieved October 20, 2026
Does it fit your wrist?
Enter your wrist circumference. The watch appears to scale on the flat top of the wrist.
Comfortable
Lug-to-lug 49.6 mm on a flat top of 54.1 mm: 92 % of the width.
Lug-to-lug is 75 to 95% of the flat top, the usual comfortable range.
Measurements and sources
Brands rarely publish thickness, lug width and lug-to-lug together. Each observation below is kept separate, with who gave it.
Case thickness
| Value | Type | Source | Date |
|---|---|---|---|
| 12.65 mm | Official | Bremont Published as the case depth. | October 20, 2026 |
Lug-to-lug
| Value | Type | Source | Date |
|---|---|---|---|
| 49.62 mm | Official | Bremont Published as the case length. | October 20, 2026 |
Lug width
Lug width is the gap between the lugs, where the strap fits. It is not lug-to-lug.
| Value | Type | Source | Date |
|---|---|---|---|
| 22 mm | Official | Bremont | October 20, 2026 |
Calibre source
Official Bremont · retrieved October 20, 2026
Other versions in the same case
These references differ only by dial, bracelet or bezel colour. The brand gives them the same case dimensions, so the figures on this page apply to them too.
- alt42-per-ti-blskl-b · Skeletonised, leather strap
Other Altitude references
| Watch | Ø | Thickness | Lug-to-lug | Calibre |
|---|---|---|---|---|
| Altitude MB Meteor Time Zones 42 mm altitude-mb-meteor-time-zones-air-force-blue-dial-bracelet | 42 mm | 12.23 mm | 49.3 mm | BB641AH |
| Altitude MB Meteor 42 mm alt42-mt-ti-bkbk-b | 42 mm | 12.23 mm | 49.3 mm | BB14AH |
| Altitude 39 mm altitude-39mm-blue-dial-bracelet | 39 mm | 11.19 mm | 47.17 mm | BB14AH |
| Altitude Chronograph Pulsograph Valjoux 23 42 mm altitude-chronograph-pulsograph-valjoux-23 | 42 mm | 12.65 mm | 49.62 mm | BC99M |
| Altitude Chronograph GMT 42 mm alt42-chr-g-ss-bk-b | 42 mm | 14.7 mm | 49.62 mm | BC781AC |
Other Bremont models
| Watch | Ø | Thickness | Lug-to-lug | Calibre |
|---|---|---|---|---|
| Supermarine 300M GMT 40 mm sm40-gmt-ss-blbk-b | 40 mm | 13 mm | 48 mm | BE-93-2AV |
| Supermarine 500m 43 mm sm43-dt-ss-bk-b | 43 mm | 13 mm | 50 mm | BB64AH |
| Supermarine Full Ceramic 43 mm supermarine-43mm-full-ceramic-deep-blue-leather-strap-watch | 43 mm | 13 mm | 50 mm | BB64AH |
| Supermarine Full Ceramic Tactical Black 43 mm sm43-dt-bkcer-bk-n-s | 43 mm | 13 mm | 50 mm | BE-92AV |
| Supernova Tourbillon 41 mm supernova-41mm-tourbillon | 41 mm | 10.72 mm | 48.7 mm | BHC91180MH |
| HMAF Terra Nova 40.5 mm Date hmaf-terra-nova-40-5mm-date-bracelet | 40.5 mm | 11.11 mm | 47 mm | BB54AH |
Show 17 more
| Watch | Ø | Thickness | Lug-to-lug | Calibre |
|---|---|---|---|---|
| Limited Edition Terra Nova 40.5 mm Power Reserve Bronze tn40-pwr-bz-br-b | 40.5 mm | 11.91 mm | 47 mm | BE-79AL |
| Terra Nova 40.5 mm Date tn40-dt-ss-bk-b | 40.5 mm | 11.11 mm | 47 mm | BE-36AE |
| Terra Nova 40.5 mm Date Bronze tn40-dt-bz-gn-b | 40.5 mm | 11.11 mm | 47 mm | BE-36AE |
| Terra Nova 40.5 mm Turning Bezel Power Reserve tn40-pwr-ss-bk-b | 40.5 mm | 11.91 mm | 47 mm | BE-79AL |
| Terra Nova Jumping Hour 40.5 mm tn40-jh-ss-bk-b | 40.5 mm | 10.15 mm | 47 mm | BC634AH |
| HMAF Supermarine 40 mm Date hmaf-supermarine-40mm-date-leather-strap | 40 mm | 12 mm | 49 mm | BB64AH |
| Supermarine 300M 40 mm sm40-nd-ss-bl-b | 40 mm | 12 mm | 49 mm | BE-92AO |
| Supermarine 300M Date 40 mm sm40-dt-ss-bk-b | 40 mm | 12 mm | 49 mm | BE-92AV |
| Supermarine 300M Date Bi-Colour 40 mm sm40-dt-bi-br-b | 40 mm | 12 mm | 49 mm | BE-92AV |
| Terra Nova 38 mm tn38-nd-ss-bk-b | 38 mm | 10.7 mm | 44 mm | BE-36AL |
| Terra Nova Jumping Hour 38 mm tn38-jh-ss-cc-b | 38 mm | 9.1 mm | 44 mm | BC634AH |
| Terra Nova 42.5 mm Chronograph tn42-chr-ss-bk-b | 42.5 mm | 14.8 mm | 48.8 mm | BE-50AV |
| Terra Nova 42.5 mm Chronograph Bronze tn42-chr-bz-gn-b | 42.5 mm | 14.8 mm | 48.8 mm | BE-50AV |
| Terra Nova 42.5 mm HRR Chronograph terra-nova-42-5mm-hrr-chronograph-bracelet-watch | 42.5 mm | 14.8 mm | 48.8 mm | BC77AC |
| Supernova Chronograph 41 mm supernova-41mm-chronograph-bracelet | 41 mm | 14.4 mm | 48.7 mm | BC77AC |
| Terra Nova 35 mm Jumping Hour terra-nova-35mm-jumping-hour-burgundy-leather-strap | 35 mm | 10.3 mm | 40.93 mm | BC634AH |
| Terra Nova Jumping Hour 35 mm (8.9 mm high) terra-nova-35mm-jumping-hour-leather-strap | 35 mm | 8.9 mm | 40.93 mm | BC634AH |