Garmin D2 Air X15 vs Fire-Boltt Ninja Call 2 comparison

Compare Garmin D2 Air X15
Compare Fire-Boltt Ninja Call 2
key specs
Strap ColourBlackBlack, Blue, Gold, Red, Silver
Display Size35mm-
Compatible OSAndroid and iOS-
Strap MaterialSiliconeSilicone
Dial ShapeRoundSquare
Display TypeAMOLED-
Ideal ForUnisexUnisex
general
BrandGarminFire-Boltt
ModelD2 Air X15Ninja Call 2
Release dateOctober 22, 2025March 1, 2022
Model NameGarmin D2 Air X15Fire-Boltt Ninja Call 2
Dial ShapeRoundSquare
Strap ColourBlackBlack, Blue, Gold, Red, Silver
Strap MaterialSiliconeSilicone
SizeRegularRegular
Water Resistance Depth5 ATM-
UsageFitness & OutdoorFitness & Outdoor
Ideal ForUnisexUnisex
Dial Colour-Black
Touchscreen-Yes
Water Resistant-Yes
dimensions
Weight (g)38.00-
product details
SensorHeart Rate Monitor, Stress, Sleep, Pulse Ox blood oxygenSpO2 Monitoring, Heart Rate Monitor, Optical Heart Rate Sensor
Compatible DeviceAndroid and iOSAndroid, iOS
NotificationCall Notification, Smartphone Apps NotificationsCall, Text, Social Media
Battery Life10 days10 Days
Rechargeable Battery-Yes
connectivity features
Call FunctionYesYes
BluetoothYesYes
Third Party App SupportYes-
Call FeaturesMake and Receive callscalling
Other Connectivity FeaturesGPS, Galileo, Glonass, Beidou, QZSSSmart notifications
Bluetooth Version-5
platform and storage features
Compatible Operating SystemAndroid and iOS-
RAM8GB-
camera and display features
Display Resolution454 x 454240x288
Display Size35mm-
Display TypeAMOLED-
Other Display Features-Touch Screen
fitness and watch functions
Step CountYesYes
Calorie CountYes-
Heart Rate MonitorYesYes
AltimeterYes-
CompassYes-
CalendarYes-
Alarm ClockYesYes
Date & Time DisplayYesYes
LanguageEnglishEnglish
Number of Buttons-1
Other Fitness Features-Meditative breathing, sleep tracking, drink water reminders
Other Watch Functions-Stopwatch, sedentary reminders
audio and video features
Other Multimedia Features-Music control

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