Amazfit GTR 3 Pro vs Fitbit Charge 6
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At a glance
Key specifications and important differences. Full details follow below.
| Feature |  Amazfit GTR 3 Pro |  Fitbit Charge 6 |
|---|---|---|
| Price | KSh 20,000.00 | KSh 20,000.00 |
| Display | 1.45-inch AMOLED touchscreen | AMOLED |
| Battery capacity | 450 mAh typical | — |
| Water resistance | 5 ATM | 5 ATM / water resistant to 50 m; intended for suitable shallow-water use |
| Operating system | Zepp OS | — |
| Positioning / GNSS | GPS, GLONASS, Galileo, BeiDou and QZSS | — |
| Health & wellness features | Heart rate, blood oxygen, stress, breathing rate, PAI and one-tap health measurement; wellness readings are not intended for medical diagnosis | Heart rate, blood oxygen, skin-temperature variation, ECG-compatible and EDA stress features; availability varies and wellness features are not medical diagnosis |
Full specifications
2 of 4 products
| Specification | Amazfit GTR 3 Pro | Fitbit Charge 6 |
|---|---|---|
| Identity & design | ||
| Brand | Amazfit | Fitbit |
| Model | GTR 3 Pro | Fitbit Charge 6 |
| Announced | — | September 2023 |
| Dimensions | 46 × 46 × 10.7 mm | 36.73 × 23.09 × 11.20 mm |
| Weight | 32 g without strap | 30 g |
| Build materials | Aircraft-grade aluminum-alloy body with curved glass | Aluminum case, Corning Gorilla Glass 3, and flexible silicone infinity band |
| Wrist size | 155–218 mm | Small: 130–170 mm; large: 170–210 mm; both sizes included |
| Strap / band | 22 mm quick-release leather or fluoroelastomer strap with classic pin buckle | Flexible silicone infinity band with loop-and-peg closure |
| Controls / buttons | Two physical buttons including a rotating navigation crown, plus touchscreen | Haptic side button and AMOLED touchscreen |
| Display | ||
| Display | 1.45-inch AMOLED touchscreen | AMOLED |
| Screen resolution | 480 × 480 pixels, 331 ppi | — |
| Display protection | Tempered glass with anti-fingerprint coating | Corning Gorilla Glass 3 |
| Display features | Always-on display and more than 150 watch faces | Always-on display supported; increases power use |
| Performance & software | ||
| Operating system | Zepp OS | — |
| Connectivity | ||
| Wi-Fi | 2.4 GHz Wi-Fi | — |
| Bluetooth | Bluetooth 5.0 | Bluetooth Low Energy |
| NFC | — | Built-in NFC; supported payment features vary by country and bank |
| Positioning / GNSS | GPS, GLONASS, Galileo, BeiDou and QZSS | — |
| Audio & communication | ||
| Speaker | Built-in speaker | — |
| Microphone | Built-in microphone | — |
| Calling | Bluetooth calling when paired with a compatible phone | — |
| Sensors, health & fitness | ||
| Sensors | BioTracker 3.0 PPG sensor, accelerometer, gyroscope, geomagnetic sensor, barometric altimeter, ambient-light sensor and temperature sensor | Optical heart-rate monitor, 3-axis accelerometer, red/infrared SpO2 sensors, device temperature sensor, ambient-light sensor, multipurpose ECG/EDA electrical sensors, vibration motor, GPS and GLONASS |
| Health & wellness features | Heart rate, blood oxygen, stress, breathing rate, PAI and one-tap health measurement; wellness readings are not intended for medical diagnosis | Heart rate, blood oxygen, skin-temperature variation, ECG-compatible and EDA stress features; availability varies and wellness features are not medical diagnosis |
| Sleep tracking | Sleep stages, sleep breathing quality and naps | Sleep stages, sleep score and overnight wellness tracking |
| Sports / workout modes | More than 150 sports modes with automatic recognition of eight sports | Multiple exercise modes with built-in GPS |
| Training & outdoor features | PeakBeats workout analysis, route tracking and built-in five-system positioning | — |
| Battery & durability | ||
| Battery capacity | 450 mAh typical | — |
| Battery life | Up to 12 days typical use, 30 days battery saver, 6 days heavy use or 35 hours continuous GPS | Up to 7 days; always-on display and SpO2 use require more frequent charging |
| Charging | Magnetic charging base; approximately 2 hours | Proprietary charging cable; approximately 2 hours from 0–100% |
| Water resistance | 5 ATM | 5 ATM / water resistant to 50 m; intended for suitable shallow-water use |
| Compatibility | ||
| Phone compatibility | Android 7.0 or later; iOS 12.0 or later | Android 11.0 or later; iOS 16.4 or later; Bluetooth LE and internet required |
| Companion app | Zepp app | Google Health app |
| Colors | Brown Leather or Infinite Black | Coral / Champagne Gold Aluminum; Porcelain / Silver Aluminum; Obsidian / Black Aluminum |
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