The Apple Watch was far and away the most popular smartwatch during 2015, accounting for about 51.5 percent of shipments, or 8.8 million units, according to a Jupiter Research estimate.
Source: APPLE INSIDER

Aggregating the Future
The Apple Watch was far and away the most popular smartwatch during 2015, accounting for about 51.5 percent of shipments, or 8.8 million units, according to a Jupiter Research estimate.
Source: APPLE INSIDER