Apple Watch Series 6 (Renewed) Review: Worth It in 2024?

Apple Watch Series 6 (GPS + Cellular, 40mm) - Silver Stainless Steel Case with White Sport Band (Renewed)
Apple
- Blood Oxygen Monitoring: Built-in sensor measures blood oxygen levels to provide additional health and wellness insights.
- Always-On Retina Display: Brighter always-on OLED display allows easier viewing of time, metrics, and notifications.
- ECG and Heart Monitoring: Electrical heart sensor supports ECG readings and continuous heart rate monitoring.
- Advanced Fitness Tracking: Tracks workouts, calories, movement, and multiple exercise types through Apple Fitness features.
Quick Verdict
Pros
- Blood oxygen and ECG sensors give genuine health insights without extra gadgets
- Always-on Retina display is readable in direct sunlight during outdoor runs
- GPS + Cellular works independently—leave your phone behind on walks
- Fitness tracking covers workouts from yoga to HIIT with automatic detection
- Renewed pricing typically saves $100-150 versus buying new
Cons
- Battery still caps at around 18 hours—two-a-day charging if you're a heavy workout user
- The 40mm case feels compact; larger wrists may prefer the 44mm model
- Renewed units arrive with generic packaging, not Apple's signature box
- No fast charger included; budget another $20-30 if you need one
Quick Verdict
The Apple Watch Series 6 renewed delivers the same health-tracking hardware as the current lineup—blood oxygen, ECG, GPS, and that handy always-on display—for significantly less than new. After wearing it through two weeks of commutes, gym sessions, and weekend hikes, I can say it holds up well. The trade-offs are cosmetic (you won't get Apple's pristine box) and battery-related (18 hours is still tight). If your budget tops out around $250-300 for a fitness watch and you want Apple ecosystem integration, this renewed model is the smart play. Score: 4.2/5
What Is the Apple Watch Series 6 (Renewed)?
Let me back up. I picked up this silver stainless steel 40mm model on a rainy Tuesday after my old fitness tracker finally died. The Series 6 launched in 2020, so yes, it's not Apple's newest silicon—Series 9 and Ultra 2 exist—but the health-sensing suite it carries is still Apple's most capable mainstream offering. The renewed designation means Amazon (or an authorized reseller) has inspected, cleaned, and verified the Watch performs like a new unit. It ships in generic packaging. That's the main difference you'll notice.

What you get in the box is the Watch itself, a white Sport Band (sometimes generic depending on the seller), and a magnetic charging cable. No fast charger brick. No Apple stickers. If that bothers you, the renewed experience isn't for you—but honestly, most people already have USB-C bricks lying around.
Key Features
- Blood Oxygen sensor (SpO2) measures saturation levels on demand and during sleep
- Electrical heart sensor enables ECG readings in under 30 seconds
- Always-On Retina OLED display stays readable in bright outdoor light
- Built-in GPS tracks outdoor runs and bike rides without your iPhone nearby
- Cellular option lets you take calls and stream music when your phone is stashed in a locker
- 50-meter water resistance for swim tracking in pools and open water
- ECG app detects atrial fibrillation and irregular rhythms, flagging concerns to share with your doctor
Hands-On Review
I won't pretend I wasn't a little skeptical strapping on a renewed Watch. Previous refurbished gear I've bought arrived scuffed or with degraded batteries. This one looked genuinely clean—the silver case had only a tiny hairline scratch on the crown that I found only by angling it under a lamp. The white Sport Band was clearly new or near-new. First win.

Setup took about twelve minutes from unboxing to my wrist. Pairing with my iPhone 13 was painless—scan the animation, wait, done. The blood oxygen app prompted me through a quick calibration, and within an hour I had my first reading: 98%, which matched my pharmacy pulse oximeter within one percentage point. That's not medical-grade precision, but it's close enough to catch if your numbers start trending down during illness or high-altitude activity.
By day four, I started relying on the always-on display more than I expected. Checking my wrist mid-squat at the gym—without contorting to trigger the wake gesture—felt natural. The OLED panel punches above its weight class for outdoor readability, too. Running at noon on a cloudless Saturday, I read my pace and distance without squinting.

What surprised me was the ECG app. I've had fleeting palpitations after too much coffee, and sitting still for 30 seconds to grab a reading took the anxiety out of wondering if it was anything serious. Is it a substitute for a doctor's visit? No. But it gave me data I could actually show my physician at my next checkup.
Battery is where I'd draw the line. Heavy users—GPS workouts in the morning, all-day activity tracking, sleep mode at night—will hit 15-17 hours. Light users can stretch to a day and a half. I now charge mine during my morning shower, which covers the gap. It's a routine adjustment, not a dealbreaker, but it's real.
Who Should Buy It?
- Fitness-focused iPhone users who want GPS tracking, workout detection, and heart-health monitoring without paying Series 9 prices
- Casual athletes who run, cycle, or swim and need accurate distance and pace data without carrying a phone
- Health-conscious shoppers interested in blood oxygen and ECG trends, especially those with respiratory or cardiac concerns
- Apple ecosystem converts upgrading from an older Watch or a non-Apple fitness band who want seamless iPhone integration
Skip this if you need multi-day battery life without charging, prefer a larger screen, or demand Apple retail packaging. Android users won't get full functionality—Apple Watch requires an iPhone, period.
Alternatives Worth Considering
- Apple Watch Series 7 (Renewed) — Same health features but with a larger, slightly more durable display. Worth the ~$30-50 premium if screen real estate matters to you.
- Garmin Venu 2 — Superior battery life (up to 11 days), advanced running dynamics, and works with both iPhone and Android. No ECG or blood oxygen, though Garmin's health metrics have improved.
- Fitbit Sense 2 — Strong ECG, EDA stress monitoring, and six-day battery life. Requires a Fitbit Premium subscription for full health insights. Integrates better with Android than Apple Watch.
FAQ
Yes—Amazon renewed products are inspected, tested, and certified to work like new. They typically come with a 90-day replacement guarantee. Cosmetic condition varies, so check the seller's grading before purchasing.
Final Verdict
The renewed Apple Watch Series 6 sits in a sweet spot: premium health sensing without premium pricing. The blood oxygen and ECG hardware remains genuinely useful for tracking wellness over time, and the always-on Retina display is a quality-of-life upgrade I stopped noticing only because it became normal. Battery will always be the honest limitation here—no amount of software optimization changes that you need a daily charge. But if you can work with that, the Series 6 renewed is a capable, well-priced entry into Apple's most comprehensive fitness platform.