The 12 Best Fitness Trackers & Heart Rate Monitors of 2026: Tested for Accuracy

Garmin promises a training watch that doubles as a smartwatch - an AMOLED display bright enough to read in direct sunlight, up to 13 days of battery life, and a morning report that synthesizes your overnight HRV, sleep stages, and training history into an actionable readiness score before you've finished your first cup of coffee.

The Forerunner 265 genuinely delivers on all of it. The 46mm AMOLED panel is a significant upgrade from Garmin's older MIP displays - colors are vivid, fonts are crisp, and in GPS workout mode, current pace and heart rate remain completely legible running directly into full sun. The training analytics are where Garmin earns its price premium: Training Status, Training Load focus, Acute Load, and a 21-day HRV Status graph give you a multi-dimensional picture of how your body is adapting to training stress over time. The morning report feature - showing a daily snapshot of sleep quality, recovery level, HRV status, and weather - is one of the most genuinely useful things I've seen on any wearable. Battery life in real-world testing was excellent, consistently delivering 11–12 days with the always-on display off and approximately 16–17 hours in full GPS mode.

The Forerunner 265 lacks an ECG sensor, meaning it cannot flag potential atrial fibrillation the way the Apple Watch Series 10 or Samsung Galaxy Watch 7 can. It's also not trying to be a full smartwatch - the third-party app store is limited, and you won't find Google Maps navigation or streaming apps here. If those features matter to you, consider the Apple Watch or Galaxy Watch instead. But if your priority is training seriously, understanding your body's adaptation, and not charging your watch every night, the 265 is in a class of its own.

Apple positions the Series 10 as the most advanced Apple Watch yet - thinner and larger simultaneously, with new health sensors including depth measurement and water temperature for swimmers, sleep apnea detection that monitors your breathing patterns overnight, and the same proven ECG and AFib detection that has helped detect real cardiac events in real people around the world.

The display upgrade is immediately noticeable - the Series 10's face is substantially larger than the Series 9 while the overall case feels slimmer and lighter on the wrist. ECG remains one of the most genuinely meaningful health features on any consumer wearable: a 30-second reading that can flag potential atrial fibrillation is medically significant in a way step counts simply aren't. The new Vitals app synthesizes heart rate, respiratory rate, wrist temperature, and blood oxygen into a nightly health snapshot - a useful longitudinal health record that builds real value over months of consistent wear. Activity Rings and Apple Fitness+ remain the most motivating daily exercise system in the industry. ^[3]

Battery life is the Series 10's persistent Achilles heel. Apple's 18-hour claim is accurate in typical use, and the 80%-in-30-minutes fast charging is genuinely helpful - but this is still a watch you charge every day, not every week. If you want to use the always-on display or track sleep continuously, you'll need to find a reliable daily charging window. It's a manageable routine, but users switching from a Garmin or Fitbit will feel the adjustment acutely in the first few weeks.