Amazfit GTR vs Amazfit W1821US1N

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Amazfit GTRAmazfit W1821US1N
Title Amazfit GTR Aluminium Alloy Smartwatch,All-Day Heart Rate Monitor, Daily Activity Tracker Rate and Activity Tracking, 24-Day Battery Life, 12- Sport Modes, 47mm (W1902US1N)Amazfit Bip S Fitness Smartwatch, 40 Day Battery Life, 10 Sports Modes, Heart Rate, 1.28'' Always-On Display, Water Resistant, Built-in GPS, Carbon Black
Model Amazfit

Basic Info

Suggested Price $124.99$69.99
Sale Price Check Price*Check Price*
Release Nov 2019Jul 2020


DescriptionStay on course to attain your fitness goals with this Amazfit GTR 47mm smartwatch. Bluetooth connectivity syncs with your smartphone to provide useful notifications, while the high-precision GPS captures accurate data during outdoor exercises. This Amazfit GTR 47mm smartwatch features a heart rate monitor to keep track of your lifestyle.Stay on top of your fitness targets with this carbon black Amazfit Bip S smartwatch. A powerful battery provides over 40 days of use on a single charge, and the 5 atm water resistance protects while swimming. This lightweight Amazfit Bip S smartwatch has an always-on display for clear visuals.
Top Features
  • Delicate and Elegant Design: Amazfit GTR comes in a classic design with a touch of modern features. It has a brilliant 1.39” AMOLED display, and a gallery of watch faces to choose from to fit any style.
  • Smart sports tracking-includes Smart Sport tracking technology that allows you to record 12 different sports and fitness activities including running, cycling, swimming, mountaineering, etc
  • 12-Sports Modes: Smart sports tracking-includes Smart Sport tracking technology that allows you to record 12 different sports and fitness activities including running, cycling, swimming, mountaineering, etc.
  • Full-Scale Heart-Rate Monitoring System: The Amazfit GTR, integrated with the BioTrackerTM PPG biological tracking optical sensor and an algorithm developed by Huami, offers advanced full-scale heart-rate monitoring.
  • Ultra-Long Battery Life: Amazfit GTR deeply optimizes the power consumption of the system and the components to bring long-lasting endurance of 24 days. Body Materials-Metal, microcrystalline zirconium ceramics, polymer materials
  • Water Resistant: Amazfit GTR is water resistant to a depth of 50 meters and supports multiple swimming scenarios. It can automatically recognize your swimming position, and record data like SWOLF, pace or calorie consumption, and enables an accurate analysis on the data each time you swim.
  • Amazfit Bip S Fitness Smartwatch comes with a whopping 40 day long battery life on a single charge of 2.5-hours.
  • 10 Sport Modes Tracking (Treadmill, Outdoor Running, Cycling, Yoga, etc) with 5 ATM water resistant so you can take it for a swim.
  • Built-in GPS to track daily step count, distance traveled, calories burned, and sleep quality.
  • BioTracker PPG Heart Rate Monitor provides high-precision continuous heart rate tracking, warning and interval values.
  • Highly colorful always-on display with easily readable outdoors even under bright sunlight. True bright colors with 64 Gamut.
  • Get notifications for emails, SMS messages, and incoming phone calls as well as alerts for Facebook, Twitter, weather forecasts, etc.
  • Compatible with both Google Android and Apple iOS.


BestBuy Rating3.8 (out of 5 reviews)4.4 (out of 13 reviews)
Latest Reviews No reviews yet.No reviews yet.

All Features

Wi-Fi CompatibilityNoneNone
Adjustable Band LengthYesYes
Music PlayerYes
SeriesGTRBip S
Battery Capacity410 milliampere hours200 milliampere hours
Case Width1.86 inches1.39 inches
Clasp TypeBuckleBuckle
App CompatibleYesYes
Display ScreenYesYes
Global PositioningGLONASSGLONASS
Form FactorWristwatchWristwatch
Screen MaterialCorning Gorilla Glass 3Corning Gorilla Glass 3
Customizable Watch FacesYes
Vibration AlertYesYes
Maximum Wrist Size8.75 inches8.75 inches
Clock DisplayYesYes
Mobile NotificationsYesYes
Additional Accessories IncludedMagnetic charging baseCharging cable, clip dock
Color DisplayYesYes
Color CategoryBlackBlack
Water ResistantYesYes
Maximum Depth of Water Resistance164 feet164 feet
Product TypeSmartwatchSmartwatch
Battery TypeLithium-polymerLithium-ion polymer
Band TypeStrapStrap
Touch ScreenYesYes
Product Height0.42 inches1.65 inches
Product Length1.86 inches0.45 inches
Case MaterialMetalPolycarbonate
Manufacturer's Warranty - Parts1 Year1 Year
Operating System CompatibilityAndroidAndroid
Band MaterialLeatherTPU
Manufacturer's Warranty - Labor1 Year1 Year
Model NumberW1902US1NW1821US1N
Charging Interface(s)WirelessUSB
Case Size47 millimeters31 millimeters
Product Weight1.28 ounces1.09 ounces
Case ShapeRoundRectangular
Backlit DisplayYesYes
Case Thickness0.42 inches0.45 inches
Multi-Sport TrackingYesYes
Bluetooth Version5.05.0
SensorsAmbient light sensorAmbient light sensor
Band Width22 millimeters20 millimeters
Product Width1.86 inches1.39 inches
Screen Size35.3 millimeters32.5 millimeters
Band ColorBrownBlack
Metrics MeasuredCalories burnedDistance swam
Bluetooth EnabledYesYes
releaseNov 2019Jul 2020
ColorAluminum Alloy With Brown Leather StrapCarbon Black
Product NameGTR Smartwatch 47mmBip S Smartwatch 31mm Polycarbonate
ColourCarbon Black
Item Weight7.2 ounces
Display technologyAMOLED
Device interface - primaryTouchscreen
Item model numberW1821US1N
OSAmazfit OS, Default_no_selection_value
Date First AvailableDecember 17, 2019
Other display featuresWireless
Included ComponentsUser Manual, Charging Pod, Smartwatch
Connectivity technologiesGPS
Batteries1 Lithium ion batteries required. (included)
Package Dimensions4.6 x 4.4 x 1.8 inches

More Information

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