Features

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Camera and Display Features
Display Resolution 240 x 180 Pixels  240x180 pixels  360 x 360 Pixels  454 x 454 Pixels
Display Size 1.25 inch  1.25 inch  1.33 inch  1.77 inch
Display Type LCD  OLED  Super AMOLED 
Backlight Display Yes Yes Yes
Scratch Resistant Yes Yes Yes
Other Display Features Always-on Color Display with Scratch Resistant Gorilla GlView More...
Fitness and Watch Functions
Calorie Count Yes Yes Yes Yes
Step Count Yes Yes Yes Yes
Heart Rate Monitor Yes Yes Yes Yes
Other Fitness Features Sleep Monitoring  Tracks: Distance, Pace, Steps, Sleep Quality, Calories BuView More...
Date & Time Display Yes Date & Time  Yes Yes
Calendar Yes Yes Yes Yes
Alarm Clock Yes Yes Yes Yes
Language English  English 
Number of Buttons 3  2  3
Other Watch Functions Customizable Watch Faces, Calendar Alerts, Receive NotifiView More... Personalize Dial, Control Music, Calendar Alerts, Social  View More...
Altimeter Yes
Dimensions
Weight 303.3 g  63 g 
Width 43 mm 
Warranty
Warranty Summary 1 Year Warranty  1 Year Manufacturer's Domestic Warranty  1 Year Warranty  2 Years Warranty
Warranty Service Type Carry In  Carry In  Carry In
Covered in Warranty Manufacturing Defects  1 Year Manufacturer Warranty from the Date of Purchase  Manufacturing Defects  Manufacturing Defects
Not Covered in Warranty Physical Damage  Physical Damage  Physical Damage
Domestic Warranty 1 Year  1 Year  1 Year  2 Year
International Warranty 1 Year 
Audio and Video Features
Microphone Yes
Voice Control Yes
General
Sales Package Smartwatch, Charger, User Manual  Smartwatch, User Manual, Charger, Dongle  Smartwatch, Charging Dock, Travel Adapter, Strap, Quick SView More... Smartwatch, Charger, User Manual
Model Number FB503GYBK  FB502SBKL  SM-R800NZSAINU  FTW4011
Model Name Ionic  Blaze  Galaxy Watch 46 mm  4th Gen Explorist HR
Dial Shape Square  Square  Circle  Circle
Strap Color Black  Black  Black  Silver
Strap Material Elastomer  Elastomer  Elastomer  Stainless steel
Size Regular  Large  Regular  Regular
Touchscreen Yes Yes Yes Yes
Water Resistant Yes Yes Yes Yes
Usage Notifier, Fitness & Outdoor  Fitness & Outdoor  Fitness & Outdoor  Fitness & Outdoor
Ideal For Unisex  Unisex  Men  Men
Dial Color Black 
Water Resistance Depth 50 m  10000 mm  50 m  30 m
Dial Material Metal Case 
Product Details
Closure Metal Clasp  Strap Buckle  Metal Clasp
Sensor 3-axis Accelerometer, 3-axis Gyroscope, Optical Heart RatView More... 3-axis accelerometer, 3-axis gyroscope, Optical heart ratView More... 3-axis Accelerometer, Ggyro, Barometer, Heart Rate SensorView More... Accelerometer, Ambient Light, Gyroscope, Heart Rate
Compatible Device iPhone, Android Smartphones  iPhone, Android Smartphones  iPhone, Android Smartphones
Notification Yes Calendar Reminder, Call Notification, Text Notification  Yes Yes
Notification Type Text and Calender Alerts  Vibration  Vibration 
Battery Type Lithium Polymer  Lithium Polymer  Lithium Polymer 
Battery Life Upto 6 Days (Based on Usage)  Upto 5 Days  Upto 3 Days (Based on Usage)  Upto 24 hrs (Based on Usage)
Rechargeable Battery Yes Yes Yes Yes
Charger Type USB Cable  WPC Based Wireless Charging 
Other Features Wireless Syncing  Track Steps, Distance, Calories Burned, Floors Climbed anView More... 22 mm Interchangeable Strap, 472 mAh Battery, US MilitaryView More... Interchangeable Watch Band
Maximum Operating Altitude 9144 m 
Charge Time 120 min  120 min  2 hrs
Stand By Time 120 hr 
Platform and Storage Features
Compatible Operating System Android & iOS  Android 4.3, iOS, Windows 7 and Above  Android & iOS  Android 4.4 and Above (Excluding Go Edition) and iOS 9.3  View More...
Operating System Fitbit OS  Fitbit OS  Tizen Wearable OS  Wear OS by Google
RAM 512 MB
Processor Name Exynos 9110 Dual Core Processor  Qualcomm Snapdragon Wear 2100
Internal Memory 4 GB  4 GB
Number of Cores 2 
Processor Speed 1.15 GHz 
Connectivity Features
Call Function No  No  No  No
Bluetooth Yes Yes Yes Yes
Wi-Fi Yes Yes Yes No
GPS Yes Yes Yes
Bluetooth Version v4.0  v4.0  v4.2  v4.1
Other Connectivity Features Wi-Fi (802.11b/g/n)  NFC, Wi-Fi (802.11b/g/n) 
Messaging Support No 
Call Features Incoming Call Alerts 
Operating Range 3 m 
Third Party App Support Yes