Fire Boltt Onyx Smartwatch vs Apple Watch Ultra 3

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General

BrandFire BolttApple
Model NameOnyxWatch Ultra 3
SimYes, eSim
Ideal ForMen, WomenMen, Women
Sales PackageSmartwatch, User Manual, ChargerSmartwatch, Strap, Magnetic Fast Charging USB-C Cable, User Manual

Design and Body

Weight61 g
MaterialSteelTitanium
StrapSteel
ShapeCircleRectangle
Water ResistantYesYes
Water Resistant Depth100 m
Water Resistant CertificateIP67
Dust ProofYes
Scratch ResistantYes

Display

TypeColor AMOLEDColor LTPO OLED
TouchYesYes, Multi Touch
Size1.43 inches1.92 inches
Resolution466 x 466 pixels422 x 514 pixels
PPI461 ppi346 ppi
Ambient Light SensorYes
Always On DisplayYesYes
Glass TypeFlat Sapphire Crystal
Features750 nits brightnessUp to 3,000 nits peak brightness

Memory

RAM2 GB
Inbuilt Memory4 GB64 GB

Connectivity

Wi-FiYes, Wi-Fi 4 (802.11n)
Voice CallingYes
BluetoothYesYes, 5.3
Bluetooth CallingYes
GPSYes
3GYes
4GYes
VoLTEYes

Extra

NFCYes
Gesture ControlYesYes
GyroscopeYesYes
Voice AssistantYesYes
Inbuilt MicrophoneYesYes
Inbuilt SpeakerYesYes
NotificationsYesYes
Extra Features300+ Sports Modes, 130+ Watch Faces, Inbuilt Games, Smart Notification, Camera and Music ControlsCrash Detection, MIL-STD 810H, Precision Finding for iPhone, Satellite Messaging, Emergency SOS via Satellite and Roadside Assistance via Satellite

Camera

FlashYes, Screen Flash

Technical

OSWatchOS 26
Compatible OSAndroid, iOSiOS
CPUS10 chip with 64-bit
GPUPowerVR

Multimedia

EmailYes
MusicYes

Battery

Battery Capacity380 mAh
Battery TypeLithium Ion
Removable BatteryNon-Removable BatteryNon-Removable Battery
Battery Backup5 days1.75 days
Fast ChargingYes
Wireless ChargingYes
StandBy Time10 days

Fitness Features and Sensors

Heart Rate MonitorYesYes
SpO2 (Blood Oxygen) MonitorYesYes
BP MonitorYes
Temperature SensorYes
PedometerYesYes
AltimeterYes
CompassYes
Sleep MonitorYesYes
ReminderYes, Sedentary ReminderYes
Meters and SensorsCalorie Count, Step CountAccelerometer, Calorie Count, Step Count, Barometer, Compass
Extra FeaturesAlarm Clock, Stopwatch, TimerAlarm Clock, Stopwatch, Timer, VO2max, Temperature (body), Temperature (water), Temperature sensing (0.01˚ accuracy), ECG, Blood Glucose Level Monitoring

Warranty

Warranty1 year, Manufacturer Warranty1 year, Manufacturer Warranty
Covered in WarrantyManufacturing Defects
Not Covered in WarrantyPhysical Damages

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