All RT200s feature current speed, cumulative odometer, trip odometer, 12/24hr clock, service timer, auto start/stop, and all include replaceable front cover plates with different color/coatings available as accessories. RT233 has a dual display, RT255/277/288 have 3 screen displays. RT-255/277 have heavy-duty wiring harness. RT277 has wired speed and cadence from rear wheel. RT-255L/288L have a NiteLite and one-touch backlight feature. Extra clear front cover included that turns the front cover black.