Side by side
Breitling Top Time B01 RacingvsHemel HD24 Automatic
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
18 of 29 specs differDiameter
Top Time B01 Racing38mm
HD24 Automatic40mm
Power Reserve
Top Time B01 Racing70h
HD24 Automatic40h
Water Resistance
Top Time B01 Racing100m
HD24 Automatic200m
MSRP
Top Time B01 Racing$750
HD24 Automatic$300
Full specifications
Case
8 specsCategory
Mechanical
Diver
Diameter
38mm
40mm
Thickness
13.07mm
13mm
Lug-to-Lug
—
48mm
Material
Stainless Steel
316L Stainless Steel
Finish
Stainless steel
Brushed and polished
Water Resistance
100m
200m
Caseback
—
Solid
Crystal & Dial
5 specsCrystal
Sapphire
Domed Sapphire
Crystal Shape
—
Flat
AR Coating
—
Inner
Dial Color
—
Gallant USAF Edition
Indices
—
Applied
Movement
4 specsCaliber
Breitling B01
Seiko NH38
Beat Rate
0 vph
28,800 vph
Power Reserve
70h
40h
Jewels
34
25
Pricing
1 specsMSRP
$750
$300
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