The BENU Power Reserve

This is a little something from Moritz Grossmann.  Quite a bit more on these folks to come as we get ready for BaselWorld!  This is the BENU Power Reserve -

Courtesy of Grossman Uhren



Here are the details, straight from Glashutte -

Technical data: BENU Power reserve

Movement:	Manufacture calibre 100.2, manually wound, adjusted in five positions
No. of parts:	227
No. of jewels:	26 jewels, 3 of which in screwed gold chatons
Escapement:	Lever escapement
Oscillator:	Shock-absorbed Grossmann balance with 4 inertia and 2 poising screws, Nivarox 1 balance spring with No. 80 Breguet terminal curve, Gerstenberger geometry
Balance:	Diameter 14.2 mm, frequency 18,000 semi-oscillations per hour
Power reserve:	42 hours when fully wound
Functions:	Hours and minutes, subsidiary seconds with stop seconds, Grossmann winder with pusher, power-reserve indicator
Special features:	Grossmann balance; lateral pusher for disabling the handsetting mode and starting the movement; bar-shaped power-reserve indicator with two-coloured display segment driven by a planetary gearing system; space saving and modified Glashütte stopwork with backlash;  adjustment with Grossmann micrometer screw on a cantilevered balance cock; Pillar movement with 2/3 plate and frame pillars in untreated German silver, 2/3 plate, balance cock and escape-wheel cock hand-engraved; broad horizontal Glashütte ribbing, 3-band snailing on the ratchet wheel, raised gold chatons with pan-head screws; separately removable clutch winder; stop seconds for handsetting
Operating elements:	Crown in 750/000 gold to wind the watch and set the time, pusher in 750/000 gold to start the movement
Case dimensions:	Diameter: 41.0 mm, height: 11.65 mm
Movement dimensions:	Diameter: 36.4 mm, height: 5.4 mm
Case:	Three-part, precious metal
Dial:	Solid silver, with Arabic numerals
Hands:	Hand-crafted, steel or stainless steel
Crystal/display back:	Sapphire crystal, antireflection-coated on one side
Strap:	Hand-stitched alligator strap with butterfly clasp in precious metal
Versions
Reference:	001.C-221-11-1
Case/clasp:	750/000 white gold
Dial:	Argenté
Hands:	Hand-crafted, steel, annealed to a brown-violet hue
Reference:	001.C-221-13-1
Case/clasp:	750/000 white gold
Dial:	Grey
Hands:	Hand-crafted, hour and minute stainless steel, polished, with white HyCeram filling, subsidiary second stainless steel, polished
Reference:	001.C-211-11-1
Case/clasp:	750/000 rose gold
Dial:	Argenté
Hands:	Hand-crafted, steel, annealed to a brown-violet hue