Apple Watch comes in three models - Apple Watch, Apple Watch Sports, and Apple Watch Edition. It has a digital display and uses voice commands and touch as its main inputs since it does not have a keyboard. Some apps are optimized for Apple Watch's quick response times by being lighter versions of their iPhone counterparts. Useful Apple Watch apps include Shazam for identifying songs, Yelp for finding places, and Transit for public transportation schedules. Although Apple Watch is not all-powerful, it can be useful for business in limited ways through optimized apps.