Screen size
Galaxy Watch Ultra21.5"
Z300Winner: 2.0"+25%
Quick verdict
Galaxy Watch Ultra2 leads the measured specs 11-6.
Measured wins
Galaxy Watch Ultra2
11
spec wins
Overall winner
Ties
2
equal specs
Z300
6
spec wins
Screen size
Technology
Galaxy Watch Ultra2
GSM / HSPA / LTE
Z300
GSM / UMTS
2G bands
Galaxy Watch Ultra2
GSM 850 / 900 / 1800 / 1900
Z300
GSM 900 / 1800 / 1900
3G bands
Galaxy Watch Ultra2
HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
Z300
UMTS 2100
4G bands
Galaxy Watch Ultra2
LTE
Resolution
Refresh rate
Peak brightness
Pixel density
CPU speed
RAM
Storage
Main camera
Front camera
Battery
Wired charging
Weight
Thickness
IP rating
Wi‑Fi
Bluetooth
USB
5G support
equal specsNFC
3.5mm jack
equal specsSD card
Stereo speakers
Z300
-
Speed
Galaxy Watch Ultra2
HSPA, LTE
Z300
Yes, 384 kbps
Announced
Galaxy Watch Ultra2
Not announced yet
Z300
2005, Q1
Status
Galaxy Watch Ultra2
Rumored
Z300
Discontinued
Dimensions
Galaxy Watch Ultra2
-
Z300
89 x 47 x 25 mm (3.50 x 1.85 x 0.98 in)
Weight
Galaxy Watch Ultra2
-
Z300
115 g (4.06 oz)
Build
Galaxy Watch Ultra2
Sapphire crystal front, ceramic/sapphire crystal back, titanium frame (grade 4)
Z300
-
SIM
Galaxy Watch Ultra2
eSIM
Z300
Mini-SIM
Other
Galaxy Watch Ultra2
IP68 dust tight and water resistant (immersible up to 100m/10ATM for 10 min) MIL-STD-810H compliant ECG certified
Z300
-
Type
Galaxy Watch Ultra2
Super AMOLED, 5000 nits (peak)
Z300
TFT, 256K colors
Size
Galaxy Watch Ultra2
1.5 inches
Z300
2.0 inches, 31 x 39 mm, 12.6 cm2 (~30.1% screen-to-body ratio)
Resolution
Galaxy Watch Ultra2
480 x 480 pixels (~327 ppi density)
Z300
176 x 220 pixels (~141 ppi density)
Protection
Galaxy Watch Ultra2
Sapphire crystal glass
Z300
-
Other
Galaxy Watch Ultra2
-
Z300
Second external OLED display, 65K colors (80 x 64 pixels)
OS
Galaxy Watch Ultra2
Android Wear OS 6, One UI Watch 9
Z300
-
Chipset
Galaxy Watch Ultra2
Snapdragon SW6100 Wear Elite (3 nm)
Z300
-
CPU
Galaxy Watch Ultra2
Penta-core (1x2.1 GHz & 4x 1.95 GHz)
Z300
-
Card slot
Galaxy Watch Ultra2
No
Z300
microSD (dedicated slot)
Internal
Galaxy Watch Ultra2
32GB 2GB RAM, 64GB 2GB RAM
Z300
50MB
Phonebook
Galaxy Watch Ultra2
-
Z300
1000 entries, Photo call
Call records
Galaxy Watch Ultra2
-
Z300
20 dialed, 20 received, 20 missed calls
Other
Galaxy Watch Ultra2
-
Z300
4 MB for Java applications
Other
Galaxy Watch Ultra2
No
Z300
-
Loudspeaker
Galaxy Watch Ultra2
Yes
Z300
No
3.5mm jack
Galaxy Watch Ultra2
No
Z300
No
Alert types
Galaxy Watch Ultra2
-
Z300
Vibration; Downloadable polyphonic, MP3 ringtones
WLAN
Galaxy Watch Ultra2
Wi-Fi 802.11 a/b/g/n/ac, dual-band
Z300
No
Bluetooth
Galaxy Watch Ultra2
6.0, A2DP, LE
Z300
1.1
Positioning
Galaxy Watch Ultra2
GPS (L1+L5), GLONASS, GALILEO, BDS
Z300
No
NFC
Galaxy Watch Ultra2
Yes
Z300
-
Radio
Galaxy Watch Ultra2
No
Z300
No
USB
Galaxy Watch Ultra2
No
Z300
Proprietary
Infrared port
Galaxy Watch Ultra2
-
Z300
Yes
Sensors
Galaxy Watch Ultra2
Accelerometer, gyro, heart rate, barometer, altimeter, compass, SpO2, temperature (body), temperature (water), BioActive
Z300
Messaging
Galaxy Watch Ultra2
-
Z300
SMS, EMS, MMS, Email
Browser
Galaxy Watch Ultra2
-
Z300
WAP 2.0/xHTML
Games
Galaxy Watch Ultra2
-
Z300
Yes
Java
Galaxy Watch Ultra2
-
Z300
Yes, MIDP 2.0
Other
Galaxy Watch Ultra2
-
Z300
MP3/AAC/MPEG player SyncML Predictive text input Organizer Voice memo
Type
Galaxy Watch Ultra2
Si/C Li-Ion 800 mAh
Z300
Removable Li-Ion 950 mAh battery
Charging
Galaxy Watch Ultra2
10W wireless
Z300
-
Stand-by
Galaxy Watch Ultra2
-
Z300
Up to 180 h
Talk time
Galaxy Watch Ultra2
-
Z300
Up to 3 h
Colors
Galaxy Watch Ultra2
Gray, Green
Z300
Dark Black
Models
Galaxy Watch Ultra2
SM-L715F
Z300
-
Price
Galaxy Watch Ultra2
About 750 EUR
Z300
-
SAR EU
Galaxy Watch Ultra2
-
Z300
0.70 W/kg (head)
Single
Galaxy Watch Ultra2
-
Z300
1 MP
Features
Galaxy Watch Ultra2
-
Z300
LED flash
Video
Galaxy Watch Ultra2
-
Z300
Yes
Single
Galaxy Watch Ultra2
-
Z300
VGA videocall camera
Video
Galaxy Watch Ultra2
-
Z300