Garmin D2 Air X15 vs Fire-Boltt Emerald comparison

Compare Garmin D2 Air X15
Compare Fire-Boltt Emerald
key specs
Strap ColourBlackGreen, Blue, and Rose Gold
Display Size35mm-
Compatible OSAndroid and iOSAndroid, iOS
Strap MaterialSiliconeStainless Steel
Dial ShapeRoundRound
Display TypeAMOLED-
Ideal ForUnisexWomen
general
BrandGarminFire-Boltt
ModelD2 Air X15Emerald
Release dateOctober 22, 2025August 9, 2023
Model NameGarmin D2 Air X15Fire-Boltt Emerald
Dial ShapeRoundRound
Strap ColourBlackGreen, Blue, and Rose Gold
Strap MaterialSiliconeStainless Steel
SizeRegularRegular
Water Resistance Depth5 ATM-
UsageFitness & Outdoor-
Ideal ForUnisexWomen
Model Number-‎BSW066
Interchangeable Strap-Yes
Water Resistant-IP68
dimensions
Weight (g)38.0060.00
Width-10cm
Height-8.5cm
Thickness-6.5cm
product details
SensorHeart Rate Monitor, Stress, Sleep, Pulse Ox blood oxygenSpO2 sensor, Heart Rate tracker, Sleep tracker, Female health tracker
Compatible DeviceAndroid and iOSAndroid, iOS
NotificationCall Notification, Smartphone Apps NotificationsYes
Battery Life10 days-
Notification Type-Smart Notification
Talk time-5 days
Battery Type-‎Lithium Ion
Charge Time-2 hours
Rechargeable Battery-Yes
connectivity features
Call FunctionYesYes
BluetoothYesBluetooth
Third Party App SupportYes-
Call FeaturesMake and Receive calls-
Other Connectivity FeaturesGPS, Galileo, Glonass, Beidou, QZSS-
Wi-Fi-Yes
platform and storage features
Compatible Operating SystemAndroid and iOSAndroid, iOS
RAM8GB-
camera and display features
Display Resolution454 x 454160x80
Display Size35mm-
Display TypeAMOLED-
fitness and watch functions
Step CountYes-
Calorie CountYes-
Heart Rate MonitorYesYes
AltimeterYes-
CompassYesYes
CalendarYesYes
Alarm ClockYesYes
Date & Time DisplayYesYes
LanguageEnglish-
Number of Buttons-1
Other Fitness Features-100+ Sports Mode Tracking, Activity Tracker, Breathe, SpO2, Heart Rate Tracking, Multisport Tracker, Pedometer, Calorie Tracker, Daily Workout Memory, Distance Tracker
Other Watch Functions-In Built Mic & Speaker, Accelerometer, Alarm Clock, Music Player, Notifications, Camera, Sedentary Reminder
audio and video features
Speaker-Yes
Microphone-Yes

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