Apple Watch

Apple Watch, stylized as   WATCH, is a line of es designed and marketed by Apple Inc.

History
The first-generation Apple Watch was released in April 2015. It quickly became the best-selling wearable device after 4.2 million were sold in the second quarter of fiscal 2015. In subsequent years, a new generation of Apple Watch with an improved set of internal components  — labeled by Apple a 'Series', with certain exceptions — has been introduced each September.

Each series has been initially sold in multiple variants defined by the watch casing's material, color, and size (except for the budget models, Series 1 and SE, which were available only in aluminum). Beginning with Series 3, LTE cellular connectivity was an option for aluminum versions, which was standard with the other materials. The band included with the watch can be selected from multiple options from Apple, and watch variants in aluminum co-branded with Nike and in stainless steel co-branded with Hermès are also offered, which include exclusive bands and digital watch faces carrying those companies' brandings.