Samsung Galaxy Watch9 review

Samsung Galaxy Watch9 is the natural pick for someone already on a Samsung Galaxy phone, because that is where its health features work in full. Samsung lists a morning blood pressure estimate: you calibrate the watch with a blood pressure cuff sold separately, wear it overnight and see an estimate when you wake. A Heart Health Score combines four daily factors including sleep length and blood pressure, and the ECG Monitor App and irregular rhythm notifications cover AFib checks for adults 22 and older. Sleep tools include Bedtime Guidance, a sleep apnea feature and an Energy Score, all of which need Android 13 or above. The battery grows to 390 mAh from 300 mAh on Galaxy Watch7, though Samsung does not quote hours on the product page. Gemini answers when you raise your wrist and talk, and Wear OS opens the Google Play Store. The catch is phone lock-in: Samsung says the Heart Health Score and Galaxy AI features require a compatible Samsung Galaxy phone.

Who it is for

Samsung Galaxy phone owners

Price

From $379.99 before trade-in.

From $379.99 or $15.83/mo before trade-in
Quoted from the vendor pricing page on November 13, 2026.

Key features

• Morning blood pressure estimate after calibration with a cuff (sold separately)
• Heart Health Score based on sleep, blood pressure and other daily factors
• ECG Monitor App and irregular heart rhythm notifications
• Bedtime Guidance, sleep apnea feature and Energy Score
• Google Gemini by raising the wrist, without a wake word

Strengths and weaknesses

• Strength: 390 mAh battery, up from 300 mAh on Galaxy Watch7 and Watch6
• Strength: Runs Wear OS with access to the Google Play Store
• Strength: Samsung lists up to $250 instant trade-in credit
• Weakness: Heart Health Score and Galaxy AI features need a compatible Samsung Galaxy phone
• Weakness: Blood pressure needs periodic calibration with a separate cuff
• Weakness: Samsung's page lists no battery life in hours

Key facts

• Starting price: $379.99
• Phones: Android; several features need a Samsung Galaxy phone
• Battery: 390 mAh
• Sizes: 40mm and 44mm
• ECG app: Yes

Where it ranks

Samsung Galaxy Watch9 is No. 4 in our Best Smartwatches verdict.