Use your Card 20 or more times on purchases in a billing period and earn 20 % more points on those purchases less returns and credits. (creditdonkey.com)
The most valuable benefit of the card is that after making 20 purchases on the card in a billing period, you will activate a 20 % bonus on all points earned that month. (upgradedpoints.com)
The number of days in your billing period will vary from bank to bank, but it is usually around 30 days. (valuepenguin.com)