Just like with other technologies such as cell phones, different versions of the TiMER can be seen throughout the film. Oona and Steph's TiMERs are boxier and simply beep, while newer versions like their brother Jesse's are smaller and come in different colors and play a more melodic tune.
Emma Caulfield Ford also co-stars with the Timer matchmaker Kali Rocha in Buffy the Vampire Slayer (1997) as demon friends who later become antagonists, much like their relationship in Timer.
All of Oona's love interests are left-handed.