Samsung

Samsung Watch 5 40mm Bluetooth Smartwatch (Renewed)

4.3 (357 reviews)

Samsung Galaxy Watch 5 40mm puts hospital-grade health tracking on your wrist for less than the price of new.

$109.99*
In Stock on Amazon.com
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*Price sourced from Amazon.com. Last updated:Jun 27, 2026.Price and availability are subject to change.

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Overview

The Galaxy Watch 5 40mm targets the person who wants meaningful health data without carrying a medical device. If your current watch or fitness band tells you steps and heart rate but nothing deeper, the Watch 5 closes that gap with body composition analysis, multi-stage sleep coaching, and blood oxygen tracking — all from a sensor array tight enough to fit in a watch you'd actually wear every day. It's especially well-suited to Android users already in the Samsung ecosystem, where Galaxy phone integration makes notifications, calls, and app sync feel frictionless.

The 40mm case is genuinely compact — 1.59 x 1.54 x 0.38 inches and 28.5 grams — so it doesn't dominate your wrist the way sports-focused watches can. The 1.2-inch Super AMOLED display runs at 396x396 at 330ppi, which means text and stats are sharp even in direct sunlight. Under the hood, the Exynos W920 dual-core chip keeps navigation and app loading responsive. The sapphire crystal glass over that display isn't just a spec line — it's a real-world durability upgrade over the mineral glass on older Galaxy Watches. Buying renewed means you access all of this hardware at a lower price point, with the trade-off being a non-original charger and a 90-day warranty window rather than Samsung's standard coverage.

Key Features

Enhanced BioActive Sensor: Improved accuracy for body composition, heart rate, and blood oxygen tracking.

Sapphire Crystal Display: Durable display offers improved scratch resistance for everyday use.

Advanced Sleep Coaching: Tracks sleep stages and provides personalized insights to improve sleep habits.

Comprehensive Fitness Tracking: Supports multiple workouts, activity tracking, and performance monitoring.

Seamless Android Connectivity: Syncs with compatible Android devices for notifications, apps, and calls.

Specifications

Display
1.2" Super AMOLED, 396x396px, 330ppi
Processor
Exynos W920 Dual-core 1.18GHz
RAM
1.5GB
Storage
16GB
Operating System
Wear OS 3.5, One UI Watch 4.5
Connectivity
Bluetooth, Wi-Fi
Battery
284mAh
Water Resistance
Yes
Dimensions
1.59 x 1.54 x 0.38 inches
Weight
1.01 oz (28.5g)
Glass
Sapphire Crystal
Condition
Renewed

Pros & Cons

👍 Pros

  • Sapphire crystal display is genuinely more scratch-resistant than standard mineral glass — noticeable after months of daily wear
  • BioActive sensor bundles heart rate, SpO2, and body composition into a single curved sensor for more consistent skin contact
  • Advanced sleep coaching goes beyond basic stage tracking by delivering actionable, personalized improvement tips
  • 16GB of onboard storage means local music playback without your phone nearby
  • Compact 40mm case suits smaller wrists without sacrificing core health sensors

👎 Cons

  • 284mAh battery in the 40mm is noticeably smaller than the 44mm variant — heavy GPS days will require a mid-day top-up
  • Full feature set requires a Samsung Galaxy phone; non-Samsung Android users lose some functionality, and iPhone users can't use it at all
  • Renewed unit may not include original Samsung charger — confirm what's in the box before assuming charging accessories match
  • Body composition readings require bare skin contact and consistent measurement conditions to be repeatable
  • Wear OS app ecosystem is less mature than Apple Watch's, with fewer high-quality third-party apps

Frequently Asked Questions

Android-only. The Galaxy Watch 5 requires a compatible Android phone (Android 8.0+, 1.5GB RAM+) — it will not pair with an iPhone. Samsung's Wear OS/One UI Watch ecosystem is tightly integrated with Galaxy devices for full feature access.
Yes, for most buyers. Renewed units go through inspection and testing, and the Watch 5's hardware — Exynos W920 chip, sapphire crystal display, BioActive sensor — is unchanged. You get the same health tracking performance at a meaningful discount.
The BIA (Bioelectrical Impedance Analysis) sensor on the Watch 5 provides directional readings for body fat percentage, skeletal muscle, and BMI. It's useful for tracking trends over time, but clinical-grade accuracy isn't the goal — think fitness tool, not medical device.
Expect 24–36 hours with typical use including always-on display off and light GPS use. Heavy workout tracking with GPS can bring that closer to 18–20 hours. The 284mAh battery is the trade-off for the compact 40mm form factor.
Yes. The Watch 5 automatically detects sleep and tracks stages (light, deep, REM), snore detection via microphone, and blood oxygen levels overnight. The Sleep Coaching feature then gives personalized recommendations to improve your habits over time.