Multiple-Entry Tourist Visa D1 is issued for 1, 2, and even 5 years and allows you to stay in Indonesia for up to 60 days per visit, extendable 2 times for 60 days each time.
So it lets you stay up to 180 days per visit, after which you need to leave the country. You can return at any time, and a new 60-day period will begin each time you re-enter Indonesia. This period can be again extended up to two times, each time for an additional 60 days.
*to extend your 60-day visit, your 1 or 2-year visa must have at least 60 days remaining until it expires.
