In the Longines Master Collection, the Date 42 model L2.893.4.92.6 has a blue dial and round automatic case. It comes with caliber L888.2 per the listing, but over the years, various L888 versions might have been installed.
Movement Type
Automatic
Caliber
L888.2Jewels
21
Reserve
65
Frequency
25200
Hands
Center Seconds
Shape
Round
Lug Distance
21.00 mm
Material
Stainless Steel
Glass
Sapphire
Diameter
42.00 mm
Water Resistance
30.00 m
Dial Color
Blue
Material
Bracelet
