I've been wearing the KEEPONFIT Fitness Tracker for a week now, and it's become my go-to gadget for both fitness and daily life. The 1.57" touch screen is crisp and responsive—no lag when I swipe through menus during my morning run.

What surprised me most was the battery life. After a full charge, it lasted me 5 days with continuous heart rate monitoring and sleep tracking. The USB charging is simple, though I wish the cable was longer (it's only 18 inches).

The sleep analysis feature gave me real insights—turns out I wasn't getting as much deep sleep as I thought. Now I adjust my bedtime routine accordingly. The SpO2 readings matched my finger pulse oximeter, which was reassuring.

During workouts, the auto-detection for my swimming sessions worked flawlessly. The 3ATM waterproofing held up in the pool, though I did notice the screen gets harder to read when wet.

Notification alerts are my secret productivity hack. The subtle vibration for emails lets me stay focused without constantly checking my phone. Though fair warning—the 'find my phone' feature beeps loudly, as I learned when testing it in a quiet café!

For the price, this tracker punches above its weight. It's not medical-grade, but for general fitness tracking and smart features, it's become an indispensable part of my routine.