ðə sˈeɪlz fɔːɹ fˈoːɹ hˈɑːt wˈeɪv mˌeɪd ɪt hɜː hˈaɪɪst sˈɛlɪŋ sˈɪŋɡəl, ˈiːvən sɚpˈæsɪŋ ðə tˈoʊɾəl sˈeɪlz ʌv "ɹˈiːəl ɪmˈoʊʃən slˈæʃ wˈʌn θˈaʊzənd nˈoʊ kətˈoʊbə" ɪn lˈɛs ðɐn θɹˈiː wˈiːks.
The sales for 4 Hot Wave made it her highest selling single, even surpassing the total sales of "Real Emotion / 1000 no Kotoba" in less than three weeks.