Garmin D2 Air X15 vs Fire-Boltt Phoenix Ultra comparison

Show Only Differences Highlight Differences	Garmin D2 Air X15	Fire-Boltt Phoenix Ultra
key specs
Strap Colour	Black	Blue, Gold, Dark Grey, Silver, Rainbow
Display Size	35mm	50mm
Compatible OS	Android and iOS	Android, iOS
Strap Material	Silicone	Silicone
Dial Shape	Round	Round
Display Type	AMOLED	TFT LED
Ideal For	Unisex	Unisex
general
Brand	Garmin	Fire-Boltt
Model	D2 Air X15	Phoenix Ultra
Release date	October 22, 2025	May 1, 2023
Model Name	Garmin D2 Air X15	Phoenix Ultra
Dial Shape	Round	Round
Strap Colour	Black	Blue, Gold, Dark Grey, Silver, Rainbow
Strap Material	Silicone	Silicone
Size	Regular	Regular
Water Resistance Depth	5 ATM	-
Usage	Fitness & Outdoor	-
Ideal For	Unisex	Unisex
Dial Colour	-	Black
Touchscreen	-	Yes
Interchangeable Strap	-	Yes
Water Resistant	-	IP67
dimensions
Weight (g)	38.00	55.00
Width	-	44.6
Height	-	11.95
product details
Sensor	Heart Rate Monitor, Stress, Sleep, Pulse Ox blood oxygen	SpO2 sensor, Heart Rate tracker, Sleep tracker
Compatible Device	Android and iOS	Android, iOS
Notification	Call Notification, Smartphone Apps Notifications	Yes
Battery Life	10 days	7 days
Rechargeable Battery	-	Yes
connectivity features
Call Function	Yes	Yes
Bluetooth	Yes	Bluetooth
Third Party App Support	Yes	-
Call Features	Make and Receive calls	-
Other Connectivity Features	GPS, Galileo, Glonass, Beidou, QZSS	-
Wi-Fi	-	No
GPS	-	No
Messaging Support	-	Yes
Email Support	-	No
platform and storage features
Compatible Operating System	Android and iOS	Android, iOS
RAM	8GB	-
camera and display features
Display Resolution	454 x 454	410x502
Display Size	35mm	50mm
Display Type	AMOLED	TFT LED
Other Display Features	-	60Hz refresh rate
fitness and watch functions
Step Count	Yes	Yes
Calorie Count	Yes	Yes
Heart Rate Monitor	Yes	Yes
Altimeter	Yes	-
Compass	Yes	No
Calendar	Yes	No
Alarm Clock	Yes	Yes
Date & Time Display	Yes	Yes
Language	English	-
Chronograph	-	Yes
Number of Buttons	-	1
Other Fitness Features	-	Activity Tracker, 120+ Sports Mode Tracking, Calorie Tracker, Sleep Monitor
Other Watch Functions	-	Alarm Clock, Bluetooth Calling, Voice Assistance, In Built Mic & Speaker, Notifications, Remote Camera Control, Alarm, Timer, Stopwatch, Weather Forecast Feature
ratings
Overall NDTV Rating	-	Read Review
Design and comfort Rating	-
Tracking accuracy Rating	-
Companion app Rating	-
Software and ecosystem Rating	-
Battery life Rating	-
audio and video features
Speaker	-	Yes
Microphone	-	Yes

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