Indiglo

The brand is owned by Indiglo Corporation, which is in turn solely owned by Timex, and the name derives from the word indigo, as the original watches featuring the technology emitted a green-blue light.

The Indiglo name was later licensed to other companies, such as Austin Innovations Inc., for use on their electroluminescent products.

[3] To separate the brand from Timex, the movements had luxury features associated with a higher-end brand, e.g., sapphire crystals and stainless steel or titanium casework — and used hands treated with super-luminova luminescent pigment for low-light legibility — rather than indiglo technology.

The line employed the same movements and capabilities from the TX brand,[4] at a much lower price-point -- incorporating indiglo technology rather than the super-luminova pigments.

Indiglo backlights typically emit a distinct greenish-blue color and evenly light the entire display or dial.

Indiglo feature on a Timex Ironman digital watch with a negative display
Indiglo feature on a Timex Weekender analog watch
Electroluminescent backlight on a Casio G-Shock watch with a negative display