You can buy things by installment. As for the goods you buy, the bank has no special regulations. You are free to buy watches, mobile phones and computers. As long as the status of the card is normal and the available installment amount is sufficient (the installment amount is set to 100% of your credit card permanent limit), you can apply.

I suggest that you can apply for the installment of CCB's consumption, that is, after the consumption is over, you can apply for the installment of your single consumption 1000 yuan two days before the bill date, one by one. Suppose your watch is 4500 yuan, then you can contact CCB to apply for consumption installment two days before the bill date. After the application is successful, the installment principal and installment fee will be settled on a single day of each account, and then you can repay according to the bill. If you don't know yet, you can log on to the credit card website of CCB and click "Consumption Staging" for details.