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CriterionGarmin Vivoactive 6Samsung Galaxy Watch9
US price$299.99Checked Oct 23, 2026 · Price details in the review$379.99Checked Oct 16, 2026 · Price details in the review
Three-year ownership estimate$299.99

Incomplete known subtotal.

Not included: energy use.
$379.99

Incomplete known subtotal.

Not included: energy use.
Choose ifYou want a screen, GPS and Garmin's sleep and recovery scores for $299.99, without a monthly fee.You have an Android phone on Android 13 or later and want a sleep apnea alert and an ECG app without a listed monthly fee.
Main trade-offThe 11-day battery drops to 5 days with the always-on display, and food logging and AI insights need the paid Connect+ plan.Samsung rates the 40mm battery at up to 30 hours, so plan to charge it daily. Samsung's Galaxy Watch support page also says blood pressure estimates need a cuff calibration at least every 28 days.
Key specifications
  • Battery life: Up to 11 days in smartwatch mode and 5 days with the always-on display, according to Garmin. Battery saver mode lasts up to 21 days. GPS-only mode lasts up to 21 hours, all-systems GNSS up to 17 hours, and 8 hours with music. Garmin says real battery life depends on features such as wrist heart rate, notifications and GPS.
  • Display: 1.2 in AMOLED touchscreen, 390 x 390 pixels, with an optional always-on mode. Corning Gorilla Glass 3 lens.
  • Sensors: Garmin's optical wrist heart rate monitor, Pulse Ox blood oxygen sensor, accelerometer, gyroscope, compass and ambient light sensor. GPS works with GLONASS, Galileo, QZSS and BeiDou. Garmin lists no built-in skin temperature sensor. Garmin's Tempe temperature sensor is a separate accessory.
  • Health tracking: All-day heart rate, resting heart rate, respiration, stress, Body Battery, advanced sleep tracking with sleep coach and HRV status, nap detection, hydration logging and women's health tracking. Pulse Ox works as a spot check, with optional all-day and sleep tracking. High and low heart rate alerts are available. Garmin says the watch isn't a medical device.
  • Smart features: Phone notifications, Garmin Pay contactless payments, 8 GB of memory for music from Spotify, Amazon Music and Deezer (subscription required), the Connect IQ store, incident detection and live location sharing with a paired phone, and a wheelchair mode. More than 80 preloaded sports apps.
  • Water rating: 5 ATM. Garmin says the watch withstands pressure equal to a depth of 50 m and lists swimming among its activities.
  • Subscription: None required. Garmin says all existing Garmin Connect features and data stay free. Garmin Connect+ is optional at $6.99 a month or $69.99 a year. It adds AI insights, LiveTrack+ messages, Garmin Trails, real-time indoor workout data, nutrition logging and badge challenges, and Garmin's manual says the watch's nutrition glance needs an active plan.
  • Compatibility: iPhone and Android phones through the Garmin Connect app. Bluetooth, ANT+ and Wi-Fi. Android phones can send text replies from the watch.
  • Battery: 390 mAh for the 40 mm model and 445 mAh for the 44 mm. Samsung's launch release lists up to 30 hours with the always-on display on for the 40 mm. The 40 mm charges to 50% in 30 minutes and to 100% in 80 minutes
  • Sensors: Samsung's launch release lists the BioActive Sensor (optical, electrical heart signal and bioelectrical impedance), plus temperature, accelerometer, barometer, gyro, geomagnetic and light sensors
  • Health features: A sleep apnea risk notification and an ECG app, both for people 22 and older. Samsung's Galaxy Watch support page says blood pressure estimates need calibration at least every 28 days with a third-party cuff, sold separately. Samsung also lists Bedtime Guidance, Energy Score, Vitals, Heart Health Score and antioxidant and AGEs indexes. It says Bedtime Guidance and Vitals are for wellness only.
  • Subscription: None listed for the health features. Optional iFIT premium content needs a paid subscription. The iFIT offer gives up to 2 months, then renews at iFIT's monthly rate unless you cancel. The Strava offer gives a 60-day trial that becomes a paid annual plan unless you cancel
  • Compatibility: Runs Google Wear OS. Samsung lists sleep apnea, Bedtime Guidance and Energy Score for Android phones on Android 13 or above. A blood pressure footnote says Android 12 or later and Wear OS 4.0. The page doesn't mention iPhone
  • Water resistance: 5ATM, IP68 and MIL-STD-810H, according to Samsung's launch release. The Galaxy Watch9 page's IP68 footnote says it's water-resistant in up to 5 feet of water for up to 30 minutes. It says to rinse and dry the watch after it gets wet
  • Display: Sapphire crystal, with brightness up to 3,000 nits. The 40 mm screen is 1.34 inches (438 x 438), and the 44 mm is 1.47 inches (480 x 480)
  • Sleep apnea FDA status: De Novo DEN230041, granted February 6, 2024, for adults 22 and older. Version 2.0 got 510(k) clearance K261011 on July 20, 2026, for users 18 and older
Exact variantSlate with Black Band (part 010-02985-00), 42.2 mm case. All seven color and band versions share one price40mm, Bluetooth (no LTE), Graphite
DimensionsThe case is 42.2 x 42.2 x 10.9 mm. Garmin lists 23 g for the watch and 36 g with the included silicone band. The band fits wrists from 125 to 190 mm around. The display is 1.2 inches (30.4 mm) across at 390 x 390 pixels.Samsung's launch release lists the 40 mm at 42.7 x 40.4 x 8.6 mm and 31.5 g. The 44 mm is 46.0 x 43.7 x 8.6 mm and 34.0 g. The 40 mm comes in Cream or Graphite, and the 44 mm in Silver or Graphite. The Galaxy Watch9 page lists a 14 g band.
InstallationNo installation. You pair the watch with the Garmin Connect app on an iPhone or Android phone. The box holds the watch, a USB-C charging and data cable, and documentation. Garmin lists the charging method as a proprietary plug charger. Garmin doesn't publish minimum phone versions.No installation. It runs Google Wear OS. Samsung lists sleep apnea, Bedtime Guidance and Energy Score as available on Android phones running Android 13 or above. The Galaxy Watch9 page doesn't mention iPhone. Neither that page, the buy page nor the launch release lists what's in the box, so it's unclear whether a charger or power adapter comes with it.
MaterialsThe case is fiber-reinforced polymer with an anodized aluminum bezel. The lens is Corning Gorilla Glass 3, and the included band is silicone. It takes standard 20 mm quick-release bands.Samsung says the case is aluminum and the display is sapphire crystal. It doesn't say what the band is made of.
WarrantyOne year from the date of purchase, per Garmin's Consumer Limited Warranty. Garmin can repair or replace the device, or refund the purchase price, at its option, and you pay shipping to Garmin. The warranty excludes cosmetic damage, batteries unless a defect damaged the product, and damage from accident, abuse, misuse or water. A repaired or replaced device is covered for 90 days or the rest of the original year, whichever is longer. In the US, the warranty covers products bought from Garmin or an authorized reseller, under terms revised Dec 30, 2025.Samsung's US warranty page gives no length for a watch bought in the US. An FAQ on international service mentions a 'standard warranty 12-month period' for watches launched in 2023 or later, and a 1-year limited warranty for service outside the country of purchase. The Standard Limited Warranty that Samsung links for this model doesn't state the period either. It covers the battery only if capacity falls below 80% of its rating.
Returns30 days from receiving your order, for a refund if the item is in its original condition. That applies to Garmin.com orders. Garmin says opened software, downloadable items and custom products are nonrefundable, and you start a return online. Its page doesn't say who pays return shipping. Orders from other stores follow that store's return policy, and restocking fees may apply.Watches bought on Samsung.com or the Shop Samsung app can be returned within 15 days of delivery. Samsung charges a 5% restocking fee unless the return is for damage or a defect. Damage or defect claims are due within 5 days of delivery. Return shipping is free. The watch must be like new, factory reset and in its original packaging with everything that came in the box. Watches bought elsewhere follow that retailer's policy.
Unresolved questions
  • Peer-reviewed accuracy data for the Vivoactive 6's heart rate, HRV, Pulse Ox and sleep tracking
  • Charge time and the charger's power draw
  • Minimum supported iOS and Android versions
  • Battery lifespan and the cost of an out-of-warranty battery replacement
  • Who pays return shipping on a Garmin.com return
  • Whether the 30-day Connect+ trial from Garmin's March 2025 launch release is still offered
  • Battery life with the always-on display off
  • The standard warranty length for a watch bought in the US
  • What's in the box, including whether a charger or power adapter comes with it
  • Band material, and whether the listed weight includes the band
  • Which version of the sleep apnea feature Galaxy Watch9 runs, since the FDA documents don't name it
  • Whether the ECG app and blood pressure feature on Galaxy Watch9 carry their own FDA status
  • Whether the watch works with an iPhone at all
  • The price of a compatible blood pressure cuff
  • Independent, peer-reviewed accuracy data for Galaxy Watch9

These comparisons use published specifications, not head-to-head tests. Prices and terms are dated. Unknown costs are not zero. Check the exact variant before you buy.