16 Segment Black
This free online timer is a simple, but techie, 7 hours timer features a black 16 segment LCD on a simple white background.
Great for helping students stay focused while they're working indendently or really any time that you need some help with focus.
16 Segment Green
Neon green LCD font on a black background
9 Pin Red
Dark red dot matrix font on a black background
16 Segment Blue
16 Segment LCD font, blue on black background
Roboto White on Black
A simple, basic timer with a heavy black font on a white background
Timer with a colorful gradient background
Back to School
Light monospace font on a graph paper background