T-Mobile wants to sell you an Apple Watch as well as an iPhone 6S. Starting Friday, the smartwatch will go on sale alongside Apple’s smartphone at more than 200 of the carrier’s retail stores in the United States, the company confirmed.

Customers looking to purchase the aluminum Apple Watch Sport can walk out of the store with it for zero down and interest-free payments of $14.54 a month over 24 months for the 38 mm model, or $16.62 a month over the same period for the 42 mm model. Customers looking for the stainless steel Apple Watch also will be able to purchase one at full retail price -- $549 for the 38 mm model, $599 for 42 mm.

T-Mobile also is offering customers a 16GB iPhone 6S under its Jump On Demand leasing program for $5 a month with trade-in of an iPhone 6 or 6 Plus, or $10 a month with trade-in of an iPhone 5S.

Sprint also confirmed it will begin selling the Apple Watch on Friday. One Apple Watch neither carrier will sell, however, is the $10,000 18-karat gold Apple Watch Edition.

Since Apple launched its first smartwatch in April, it gradually expanded sales of the device from online sales and select boutiques to its own stores and retail partner Best Buy. The company has remained silent about how many watches it has sold. But estimates point to at least 3.6 million units shipped during the second quarter of 2015, according to IDC.

The iPhone 6S and 6S Plus officially go on sale Friday in Australia, Canada, China, France, Germany, Hong Kong, Japan, New Zealand, Puerto Rico, Singapore, the U.K. and the U.S. Unsubsidized prices start at $649 for the 16GB 6S and $749 for the 6S Plus. But local prices may vary country to country.