Yes, you can define a sale start and end date for your Amazon listings.
To set the sale start and end date:
1. Navigate to Inventory - Inventory management
2. Click into the details of your product (binoculars)
3. Select the 'Listing Attributes' tab
4. Select Amazon as your storefront
5. The 'Sale Start Date' and 'Sale End Date' attributes are found under the Optional Listing Attributes