This is D'alembert system apply to dozen bet. Which mean it will cover 12 numbers or a dozen spot with a single bet unit. Also known as column. Choose to use the $100:$200 profit to risk ratio. Meaning you will be risking $200 dollars in bet and try to win $100 in profit. That is 50% increase in account balance.

Watch all the recent 5 videos and it shows my account grow from $1700 to $2400, that is $700 straight win and without loses yet. Good and lucky days.

Play responsibly at https://tinyurl.com/y3dzp6f8