Final answer:
A sales rep displays smart watches to promote them and demonstrate their features to potential customers, generating interest and potentially driving sales.
Step-by-step explanation:
The purpose of a sales representative displaying the company's newest smart watches is primarily twofold: to promote the product and to demonstrate its features to potential customers. Promotion involves raising awareness about the product and sparking interest, while demonstration involves showing how the product works and what it can do. In some cases, the sales rep may also collect feedback to inform further development or marketing, but the primary focus is on promotion and demonstration.