According to the official Apple website, iPhone 7 package contain this:
- iPhone with iOS 10
- EarPods with Lightning Connector
- Lightning to 3.5 mm Headphone Jack Adapter
- Lightning to USB Cable
- USB Power Adapter
iPhone 7 Plus package contain the same.
Also, you should know:
- iPhone 7 weight is 4.87 ounces (138 grams).
- iPhone 7 Plus weight is 6.63 ounces (188 grams).
There is no information about package dimension and weight on their website. But, if we can trust Amazon, and if they have same package, whole iPhone 7 (Plus) package weight is 0,39kg (or 13.6 ounces), while iPhone 7 package dimension is 5,4 x 2,6 x 0,3 inches.