Based on the screenshots we're 99% sure that Jay Baruchel wears a Casio F105W-1A watch in the movie She's Out Of My League (2010).

The screenshots show a black plastic digital watch with blue part around the screen, two metal buttons on the left and one metal button on the bottom right. The details in the blurry pictures suggest that this is the Casio Men's Illuminator Digital Watch F105W-1A, a tried and true classic style, great for casual cool wear.

With its daily alarm, hourly time signal and auto calendar, you’ll never need to worry about missing an appointment again. Also includes EL Backlight, water resistant resin case and stopwatch.

And all that for only $21.99 at Amazon.com or find it on eBay.