New Delhi, June 11 -- There is a quiet anxiety that comes with watching our parents age. We want them to maintain their fierce independence, but we constantly worry about the "what-ifs", like a sudden spike in blood pressure, an irregular heart rhythm, or worse, a fall when no one is around. You don't want to smother them, but you do want to protect them. That is exactly why a health-focused smartwatch is the ultimate gift.

The tech world has evolved past basic step-counters. Today's smartwatches are practically wearable medical assistants. The right device can run an overnight ECG, monitor blood oxygen levels, track sleep apnea risks, and automatically dial emergency services if it detects a hard fall.

But choosing one isn't easy. If i...