Hello,
this watch was indeed presented at this year's Basel fair. Personally, I am not exactly fond about the fact that Blancpain already in the first year of the new 50 Fathoms offers that much colour variations of this timepiece, but, then, this is marketing and making money.
Technical Data Ref. 5015-1127-52:
Case: Stainless Steel - Diameter 45 mm - Thickness 15,40 mm - Water-resistance 300 m - Between horns 23,00 mm - white sapphire bezel
Movement: Cal. 1315 - Diameter 30,6 mm - Thickness 5,65 mm - Power Reserve 120 h - Rubies 35 - Components 222 handfinished parts
Price: Ref. 5015-1127-52 (CHF 14.500.-).
Hope this helps!
Best,
Magnus