5277 power reserve

Dec 14, 2014,14:48 PM
 

I've been lurking at the 5277 for some time now. The salesman at the Breguet boutique has been lauding the movement for its new mainspring etc... This "new" mainspring boosts the reserves to 96 hours. What puzzles me though is that this movement (the 515dr) is from the same family as the Blancpain/Piguet 11C5 which has always had a 100h power reserve (this is a least 4-5 years old).


Could someone shed some light as to what "progress" has actually been made here? Looks awefully like a marketing gimmick! (To my great despair, as I was really looking forward to purchasing this watch!)

Thanks!!

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The beats per second....

 
 By: WHL : December 15th, 2014-14:26
Breguet is stepped up to 8 beats per second versus the 6 on the Blancpain, which theoretically allows for a more accurate timepiece. That draws down the power reserve more quickly. The new mainspring allows it to hold the power reserve for 96 hours, up fr... 

Well spotted

 
 By: Jfis : December 16th, 2014-01:18
Indeed! Thanks for pointing it out, I hadn't noticed that. The boutique came back to me saying that Blancpain uses 2 barrels whereas Breguet uses just one. Hard to see though as two elements in the Breguet's gear train still look very much like barrels. T... 

mainsprings

 
 By: bobi22 : December 22nd, 2014-23:54
The movement of this Classique model, in particular its mainsprings, uses a new type of stainless steel with excellent mechanical properties that came out in 2012. This patented material stores more energy in a given volume, which means a greater power re...