The Game Boy Micro sold over 170,000 units during its first days in Japan [REF].
According to a Q1 2007 Nintendo earnings release, 2.42 million Game Boy Micro units had been sold worldwide as of March 31, 2007, including 610,000 units in Japan, 950,000 units in the Americas, and 870,000 in other territories such as Europe and Oceania [REF].