This is an industry-standard 0.56" 2-digit ultra-bright red LED display with a removable enhanced-contrast mask/filter. The contrast mask significantly enhances readability in bright environments, and limits visual colour bleed. It is wired as two separate common-anode seven-segment displays, allowing either simple independent driving of each number, or a multiplexed arrangement.
These are very high intensity, low-power displays, with 2400uCD brightness at 10ma. The datasheet is here: LiteOn LTD-6910HRB
The second product photo shows the display in an operational environment for comparison purposes. All four display types were shot using identical lighting and exposure, in an attempt to show brightness and contrast. Note that there is fairly strong fluorescent stage lighting, therefore the perceived brightness and colour may not be perfectly accurate.