We wore the Fitbit Charge 6 for three weeks. Heart rate tracking was accurate within 3 bpm compared to chest strap monitors, and sleep tracking gave useful insights. Battery lasted 7 days, but GPS drained it fast during runs. The screen is bright but scratches easily. Verdict: reliable for casual fitness tracking, but serious athletes might want more precision. #FitbitCharge6 #Wearables #FitnessReview