【求救】想問下呢幾個有咩分別?

Sense_4_clock.apk -
        Sense_4_clock_white.apk -
        Sense_4_clock_white_v2.apk -
        Sense_4_clock_white_v3.apk -
        Sense_4_clock_black_v2.apk -
        Sense_4_clock_white_wvga_mdpi_v3.1.apk -
        Sense_4_Clock_v4_White_NoAppDrawer_Icon.apk -
        Sense_4_Clock_v4_White_Tapclock_ShowClock_Alarm.apk -