Looking to get him a smart watch to goes beyond the basics? The Guardian III Watch might be just what you're after. Not only will it track his steps, calories burnt, and heart rate, but it can also do two-way calls, voice messaging, detect falls, and has an SOS alarm function. This watch could give you real peace of mind, knowing that he'll always have a way to get in touch with you in an emergency.
A subscription is required to use the Guardian III, please check the product description for more details on this.