>> [ FIELD_REPORT: THE_150_UNIT_QUESTION ]
Target Identification: #CIGA-HNT-TRB. The CIGA Design Hunter Tourbillon is a hand-wound skeleton tourbillon in Grade 5 titanium, powered by the self-developed Calibre CD-011 — twin mainspring barrels, 26 jewels, 72-hour power reserve, open architecture front and back. The tonneau case carries the Hunter line’s skeleton language to the case perimeter with bold cutouts, polished chamfers, and exposed bezel screws. Available in Carbon, Silver, and Blue on a Grade 2 titanium H-link bracelet with quick-release fluororubber strap backup.
[ THE_SHELL: CASE_LOGIC ]
| ▪MATERIAL: | Grade 5 Titanium; micro-sandblasted planes with chamfered edges. Crown finished with polished ridges, recessed blasting, and engraved detail. |
| ▪GEOMETRY: | 47.45mm × 41.50mm tonneau / 12.4mm thickness. Lugless profile with stepped cutouts along the flanks and exposed Y-grooved bezel screws at each corner. |
| ▪STANCE: | Grade 2 titanium H-link bracelet; micro-sandblasted surfaces, chamfered edges, hidden push-button clasp. Quick-release fluororubber strap included. Link remover supplied. |
| ▪RESILIENCE: | 5 ATM / 50 metres. |
| ▪CRYSTAL: | Curved sapphire front and caseback, AR-coated. |
[ THE_FACE: VISUAL_INTERFACE ]
| ▪DIAL: | Full skeleton. Six open-worked bridges radiate from the twin-barrel centres, each with an inner hunting-blade cutout of shifting width and angled ends. Matte chamfered edges. Large circular opening grants the tourbillon cage full visual weight in the lower half. |
| ▪INTERFACE: | Eleven applied markers with Swiss Super-LumiNova Dark Green. |
| ▪CRAFT_NODE: | CIGA Design — GPHG Challenge Prize 2021 (Blue Planet reference). |
| ▪UI_LOGIC: | Caseback presents the CD-011 across broad brushed surfaces with polished chamfer contrast — a second, distinct reading of the same movement. No rotor obscures the view from either side. |
[ THE_ENGINE: INTERNAL_SPECS ]
| ▪CALIBRE: | CD-011; self-developed hand-wound skeleton tourbillon. Twin mainspring barrels. 26 jewels. 28,800 vph (4Hz). Accuracy -10 to +20 s/day. |
| ▪RESERVE: | 72 hours // Hand-wound. |
| ▪SERVICEABILITY: | Proprietary tourbillon architecture; requires brand-specific servicing. Standard independent watchmaker servicing not available for the CD-011 at component level. |