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Fitbit Inspire 3 Midnight Zen smartwatch with black silicone band and AMOLED display

Fitbit

Fitbit Inspire 3 FB424BKBK-US Midnight Zen smart watch

SKU CH-YD5Q-AXNCP MPN FB424BKBK-US

A health and fitness tracker with AMOLED display, 50-metre water resistance, SpO2 monitoring and up to 10 days of battery life

  • Battery runtimeof up to 10 days. Battery life and charge cycles vary with u
  • Strap materialSilicone
  • Strap lengthBoth small and large sizes included in box. Small: Fits wris
  • Water protection50 m
  • Display typeAMOLED
  • Internal storageSaves 7 days of detailed motion data, minute by minute Saves

Color Midnight Zen

  • Up to 10 days battery life between charges
  • AMOLED display shows notifications and metrics clearly
  • Water resistant to 50 metres for swim tracking
  • Both small and large bands included for 5.1 to 8.7 inch wrists
  • Tracks heart rate, SpO2 and sleep automatically

Health & Fitness Tracker for Daily Wellness

The Fitbit Inspire 3 FB424BKBK-US is a lightweight activity tracker designed for continuous wear. It monitors heart rate, blood oxygen and skin temperature around the clock. Both small and large silicone bands are included to fit wrists from 5.1 to 8.7 inches. A Google account and the Fitbit app are required for setup and data review.

Up to 10 Days Battery with AMOLED Display

The lithium-polymer battery delivers up to 10 days of use between charges depending on settings. The AMOLED screen provides clear visibility for notifications and metrics. Water resistance to 50 meters allows swimming and showering without removal. No active cooling or audible alerts are present; vibration handles alarms and reminders silently.

6-Month Premium Access and Automatic Tracking

The box contains the tracker, both band sizes and a proprietary charging cable. A 6-month Fitbit Premium membership unlocks Daily Readiness Scores, personalized Sleep Profiles and guided mindfulness sessions. Automatic exercise recognition covers 20-plus modes while Smart Wake uses vibration to rouse you at the optimal sleep stage. Buyers who want built-in GPS or onboard music storage should consider other devices.

How it compares

Measured against everything we stock in Smartwatches & Fitness Watches, at today’s prices. Recalculated every night.

Price $75.99
Cheaper than about 55% of the 346 comparable items (median $82.49).

Specifications

Product
Brand nameFitbit
Model nameInspire 3
Product colorMidnight Zen
Product typeActivity Tracker
Display
Display typeAMOLED
Power
Battery typeLithium-polymer
Size & build
Strap materialSilicone
Strap lengthBoth small and large sizes included in box.
Small: Fits wrist 5.1 in - 7.5 in in circumference
Large: Fits wrist 6.3 in - 8.7 in in circumference
Shipping weight0.12 kg
Package size152 × 91 × 33 mm
In the box
Included itemsFitbit Inspire 3
Classic wristband (both small & large)
Charging cable
Environment & compliance
Water protection50 m

Other versions of this model

1 more in the same range

Questions about this item

How do I set up the Fitbit Inspire 3 and what step is often missed?

Install the Fitbit app on a compatible phone, create or sign in to your Google account, then pair the tracker via Bluetooth. The step often missed is completing the Google account sign-in before attempting to pair the device.

What maintenance will the Inspire 3 need over time?

The lithium-polymer battery requires charging every few days for continuous tracking; battery life and charge cycles vary with use and settings. Clean the silicone band regularly with water and mild soap to prevent skin irritation from sweat buildup.

What limit appears first during sustained all-day wear?

Battery life of up to 10 days is the primary limit; actual results vary with settings like continuous heart rate, SpO2 monitoring, and notification frequency. The 50-meter water resistance supports swimming but does not extend battery runtime.

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