Which is better: ?
Comparing Fastrack FX4 and Fire Boltt Ninja Call Pro Plus: Fire Boltt Ninja Call Pro Plus is the better pick for the lowest price, the longest battery life and value for money; Fastrack FX4 is the better pick for software experience.
- Price: Fastrack FX4 is priced at ₹5,499; Fire Boltt Ninja Call Pro Plus is priced at ₹999. Fire Boltt Ninja Call Pro Plus is the cheapest, ₹4,500 less than Fastrack FX4.
- Display: Fastrack FX4 has a 1.51 inches AMOLED display; Fire Boltt Ninja Call Pro Plus has a 1.83 inches LCD display.
- Battery life: Fastrack FX4: Up to 5 Days; Fire Boltt Ninja Call Pro Plus: Up to 6 Days. Fire Boltt Ninja Call Pro Plus claims the longest battery life.
- Calling: Fastrack FX4: Bluetooth Calling; Fire Boltt Ninja Call Pro Plus: Bluetooth Calling.
- Health tracking: Fastrack FX4: Heart Rate, SpO2, Sleep Tracking, Stress Monitoring; Fire Boltt Ninja Call Pro Plus: Heart Rate, SpO2, Sleep Tracking.
- Ratings: Fastrack FX4 is rated 4.3/5 from 347 ratings; Fire Boltt Ninja Call Pro Plus is rated 4.2/5 from 1,590 ratings.
Last updated: · Prices in INR.
Comparing
3 smartwatches · 40+ specs
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Key Stats
Expert Scores by Category
❤️ Health & SensorsFastrack FX4 wins
🔋 Battery LifeFastrack FX4 wins
📺 Display QualityFire Boltt Ninja Call Pro Plus wins
💰 Value for MoneyFire Boltt Ninja Call Pro Plus wins
Software User ExperienceFastrack FX4 wins
Key Differences: Fastrack FX4 vs Fire Boltt Ninja Call Pro Plus
Feature |
Fastrack FX4 |
Fire Boltt Ninja Call Pro Plus |
|---|---|---|
| Price | ₹5,499 | ₹999 |
| Display Size | 1.51 inches | 1.83 inches |
| Display Type | AMOLED | LCD |
| Resolution | 466 x 466 pixels | 240 x 284 pixels |
| Battery Life | Up to 5 Days | Up to 6 Days |
| IP Rating | IP68 | IP67 |
| Bluetooth Version | 5.3 | 5.0 |
Side-by-Side Spec Comparison
★ = category winner | Blue highlight = best in that row
Fastrack
Fastrack FX4
Fire Boltt
Fire Boltt Ninja Call Pro Plus
🎨 Design
Dial Color
Black
Black
--
Dial Shape
Round
Square
--
Strap Color
Grey
Black
--
Strap Material
Stainless Steel
Silicone
--
Dial Material
Metal
Polycarbonate
--
Size
Free Size
46 mm
--
Width
44 mm
--
--
Height
36 mm
--
--
Thickness
11.5 mm
--
--
Diameter
1.51 inches
--
--
Weight
120 g
--
--
Number of Buttons
1
1
--
Closure
Foldover Clasp
Buckle
--
Scratch Resistant
No
Yes
--
Water Resistant
Yes
Yes
--
Water Resistance Depth
1.5 m
--
--
IP / ATM Rating
IP68
IP67
--
Rotating Crown / Bezel
Yes
No
--
📺 Display
Display Type
AMOLED
LCD
--
Display Size
1.51 inches
1.83 inches
--
Display Resolution
466 x 466 pixels
240 x 284 pixels
--
Touchscreen
Yes
Yes
--
Backlight Display
Yes
Yes
--
Date & Time Display
Digital
Digital
--
Peak Brightness
550 nits
280 nits
--
Always-On Display
Yes
No
--
Other Display Features
Always-On Display
2.5D Curved Glass
--
🔋 Battery
Battery Life
Up to 5 Days
Up to 6 Days
--
Rechargable Battery
Yes
Yes
--
Battery Type
Lithium Polymer
Lithium Polymer
--
Battery Capacity
--
230 mAh
--
Charge Time
2 hours
2 hours
--
Charger Type
Magnetic Charger
Magnetic Charger
--
Wireless Charging
No
No
--
Fast Charging
No
No
--
Standby Time
--
Up to 15 Days
--
❤️ Health & Sensors
Sensor
Accelerometer, Optical Heart Rate Sensor, SpO2 Sensor
Accelerometer, Optical Heart Rate Sensor, SpO2 Sensor
--
Heart Rate Monitor
Yes
Yes
--
Step Count
Yes
Yes
--
Calorie Count
Yes
Yes
--
GPS
No
No
--
Compass
No
No
--
Altimeter
No
No
--
Blood Oxygen (SpO2)
Yes
Yes
--
ECG
No
No
--
Blood Pressure Monitor
No
No
--
Skin Temperature Sensor
No
No
--
Sleep Tracking
Yes
Yes
--
Stress Monitoring
Yes
No
--
Respiratory Rate
No
No
--
Women's Health / Cycle Tracking
Yes
Yes
--
Sports Modes
100+
100+
--
VO2 Max
No
No
--
Fall Detection
No
No
--
Crash Detection
No
No
--
Emergency SOS
No
No
--
Other Fitness Features
Breathing Exercise, Activity Tracker
Sleep Tracking, Sedentary Reminder, Breathing Exercise
--
💡 Smart Features
Call Function
Bluetooth Calling
Bluetooth Calling
--
Call Features
Dial Pad, Call History, Sync Contacts
Dial Pad, Call History, Contact Sync
--
Messaging Support
Yes
Yes
--
Email Support
No
No
--
Notification
Yes
Yes
--
Notification Type
Vibration, Ring
Calls, SMS, Social Media Apps
--
Voice Control
Yes
Yes
--
Gesture Control
No
Wrist Raise to Wake
--
Third Party App Support
No
No
--
Calendar
Yes
No
--
Alarm Clock
Yes
Yes
--
NFC
No
No
--
eSIM / Cellular
No
No
--
Music Control
Yes
Yes
--
Companion App
Fastrack Smart
Da Fit
--
Watch Faces
100+
100+
--
Other Watch Functions
AI Voice Assistant, One Click Measurement, Stopwatch, Timer, Weather, Find My Phone
Stopwatch, Timer, Weather, Music Control, Find My Phone, Remote Camera
--
⚡ Performance
Operating System
Proprietary OS
Proprietary OS
--
Compatible Operating System
Android, iOS
Android, iOS
--
RAM
128 MB
--
--
Expandable Memory
No
No
--
🎧 Calling & Audio
Microphone
Yes
Yes
--
Speaker
Yes
Yes
--
Audio Features
Music Control
Built-in Speaker, Microphone
--
📡 Connectivity
Bluetooth
Yes
Yes
--
Bluetooth Version
5.3
5.0
--
Wi-Fi
No
No
--
Compatible Device
Android, iOS
Android, iOS
--
Operating Range
10 m
10 m
--
📝 Additional Information
Usage
Fitness, Casual
Fitness, Casual
--
Language
English
English
--
Chronograph
No
No
--
Warranty
1 Year
1 Year
--
Watch Type
Smartwatch
Smartwatch
--
Other Features
Calculator, Camera Control
Built-in Games, AI Voice Assistant
--
💰 Price
Best Price
₹5,499
₹999
--
Discount
31% OFF
95% OFF
--
Buy
--
🏆 Expert Verdict
Our Recommendation
Youthful design with reliable basic tracking
Fastrack FX4
Sporty youth-centric design, reliable daily activity tracking, multi-day battery life, and trusted brand backing at an accessible price point.
View Prices →Affordable Bluetooth calling powerhouse
Fire Boltt Ninja Call Pro Plus
Large crisp display, built-in voice assistant, seamless Bluetooth calling, and a wide array of active sports tracking modes.
View Prices →🔥 Trending
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❓ FAQ
Compare FAQs
Fastrack FX4 is priced at ₹5,499; Fire Boltt Ninja Call Pro Plus is priced at ₹999. Fire Boltt Ninja Call Pro Plus is the cheapest, ₹4,500 less than Fastrack FX4.
Fastrack FX4: Up to 5 Days; Fire Boltt Ninja Call Pro Plus: Up to 6 Days. Fire Boltt Ninja Call Pro Plus claims the longest battery life.
Fastrack FX4 has a 1.51 inches AMOLED display; Fire Boltt Ninja Call Pro Plus has a 1.83 inches LCD display.
Fastrack FX4: Bluetooth Calling; Fire Boltt Ninja Call Pro Plus: Bluetooth Calling.
Comparing Fastrack FX4 and Fire Boltt Ninja Call Pro Plus: Fire Boltt Ninja Call Pro Plus is the better pick for the lowest price, the longest battery life and value for money; Fastrack FX4 is the better pick for software experience.