“Part survived 60 minute test.”
In an independent lab test, 5 samples of Oshino, GE, Amglo and CML Q4554 were tested per MIL-DTL-6363H 3.6.5.3, MIL-STD-202 Method 214.  Test parameters:

• Vibration Level: D
• Vibration type:  Random(operational) Axes: Vertical
• Frequency: 50-2000 Hz
• Duration: 60 mins
• GRMS: 11.96

                  Oshino       GE      Amglo       CML
Sample 1    60              1         10             60
Sample 2    60              1           9              8
Sample 3    60              3           8              3
Sample 4    1                1           3             37
Sample 5    5                1           1              3

Average Operating Time to Failure - Minutes 

      Oshino: 37            GE:1      Amglo: 6   CML: 13

Oshino Q4554 Specifications 
Design Voltage [V]  28
Watts [W] 450
Filament CC-6
Base  CR-2
Lens Flat
MOL (mm) 67
Diameter (mm) 144
AIPBCP (cd) 65,000
Beam Spread (H x V) (deg) 50 x 11
Average Life Hours  229

Source: Intertek Report no. 101988034GRR-001, 13 March 2015