A ramen timer is a countdown timer with preset cooking times for each type of instant noodle. You pick a type without typing a time, and the timer tells you when the noodles are done.
Ramyeon is the Korean word for instant noodles. Bag ramyeon is boiled in a pot, and cup ramyeon cooks in its container after you pour in hot water. The cooking time and the water amount printed on the package differ from product to product.