5 fitness watches that last 20 days on one charge

In our rigorous lab testing, we charge each watch to 100%. Then, we replicate typical usage patterns, with day and night cycles and light exercise, until the battery is dead.

These 5 wearables rose to the top of that test. They might not be as smart or accurate as other watches we’ve tested, but they’re unbeatable when it comes to how long they last between charges.

Our usage test doesn’t include intensive workouts, so you might get a shorter return if you’re very active. Plus, remember that rechargeable batteries degrade over time. A 3-week charge might drop to 2 weeks or less over a tracker’s lifespan – but that’s still longer than many brand-new smartwatches manage.

More on how we test smartwatches and fitness trackers