Screen size
B520Winner: 1.8"+15%
Galaxy Watch Ultra21.5"
Quick verdict
Galaxy Watch Ultra2 leads the measured specs 11-6.
Measured wins
B520
6
spec wins
Ties
2
equal specs
Galaxy Watch Ultra2
11
spec wins
Overall winner
Screen size
Technology
B520
GSM
Galaxy Watch Ultra2
GSM / HSPA / LTE
2G bands
B520
GSM 900 / 1800
Galaxy Watch Ultra2
GSM 850 / 900 / 1800 / 1900
GPRS
B520
Class 10
Galaxy Watch Ultra2
-
EDGE
B520
No
Galaxy Watch Ultra2
Resolution
Refresh rate
Peak brightness
Pixel density
CPU speed
RAM
Storage
Main camera
Front camera
Battery
equal specsWired charging
Weight
Thickness
IP rating
Wi‑Fi
Bluetooth
USB
5G support
equal specsNFC
3.5mm jack
SD card
Stereo speakers
-
3G bands
B520
-
Galaxy Watch Ultra2
HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
4G bands
B520
-
Galaxy Watch Ultra2
LTE
Speed
B520
-
Galaxy Watch Ultra2
HSPA, LTE
Announced
B520
2008, December. Released 2009
Galaxy Watch Ultra2
Not announced yet
Status
B520
Discontinued
Galaxy Watch Ultra2
Rumored
Dimensions
B520
96 x 47 x 17.5 mm (3.78 x 1.85 x 0.69 in)
Galaxy Watch Ultra2
-
Weight
B520
94 g (3.32 oz)
Galaxy Watch Ultra2
-
SIM
B520
Mini-SIM
Galaxy Watch Ultra2
eSIM
Build
B520
-
Galaxy Watch Ultra2
Sapphire crystal front, ceramic/sapphire crystal back, titanium frame (grade 4)
Other
B520
-
Galaxy Watch Ultra2
IP68 dust tight and water resistant (immersible up to 100m/10ATM for 10 min) MIL-STD-810H compliant ECG certified
Type
B520
CSTN, 65K colors
Galaxy Watch Ultra2
Super AMOLED, 5000 nits (peak)
Size
B520
1.77 inches, 9.9 cm2 (~21.9% screen-to-body ratio)
Galaxy Watch Ultra2
1.5 inches
Resolution
B520
128 x 160 pixels (~116 ppi density)
Galaxy Watch Ultra2
480 x 480 pixels (~327 ppi density)
Other
B520
Wallpapers, screensavers
Galaxy Watch Ultra2
-
Protection
B520
-
Galaxy Watch Ultra2
Sapphire crystal glass
Card slot
B520
microSD (dedicated slot)
Galaxy Watch Ultra2
No
Phonebook
B520
1000 contacts, Photo call
Galaxy Watch Ultra2
-
Call records
B520
30 dialed, 30 received, 30 missed calls
Galaxy Watch Ultra2
-
Internal
B520
20MB
Galaxy Watch Ultra2
32GB 2GB RAM, 64GB 2GB RAM
Other
B520
No
Galaxy Watch Ultra2
No
Loudspeaker
B520
Yes
Galaxy Watch Ultra2
Yes
3.5mm jack
B520
Yes
Galaxy Watch Ultra2
No
WLAN
B520
No
Galaxy Watch Ultra2
Wi-Fi 802.11 a/b/g/n/ac, dual-band
Bluetooth
B520
No
Galaxy Watch Ultra2
6.0, A2DP, LE
Positioning
B520
No
Galaxy Watch Ultra2
GPS (L1+L5), GLONASS, GALILEO, BDS
Radio
B520
FM radio, recording
Galaxy Watch Ultra2
No
USB
B520
2.0
Galaxy Watch Ultra2
No
NFC
B520
-
Galaxy Watch Ultra2
Yes
Sensors
B520
Galaxy Watch Ultra2
Accelerometer, gyro, heart rate, barometer, altimeter, compass, SpO2, temperature (body), temperature (water), BioActive
Messaging
B520
SMS, MMS, Email
Galaxy Watch Ultra2
-
Browser
B520
WAP 2.0/xHTML, HTML
Galaxy Watch Ultra2
-
Games
B520
Yes
Galaxy Watch Ultra2
-
Java
B520
Yes, MIDP 2.0
Galaxy Watch Ultra2
-
Other
B520
Organizer Voice memo Predictive text input
Galaxy Watch Ultra2
-
Type
B520
Removable Li-Ion 800 mAh battery
Galaxy Watch Ultra2
Si/C Li-Ion 800 mAh
Stand-by
B520
Up to 390 h
Galaxy Watch Ultra2
-
Talk time
B520
Up to 7 h
Galaxy Watch Ultra2
-
Charging
B520
-
Galaxy Watch Ultra2
10W wireless
Colors
B520
Black
Galaxy Watch Ultra2
Gray, Green
SAR EU
B520
0.49 W/kg (head)
Galaxy Watch Ultra2
-
Price
B520
About 40 EUR
Galaxy Watch Ultra2
About 750 EUR
Models
B520
-
Galaxy Watch Ultra2
SM-L715F
OS
B520
-
Galaxy Watch Ultra2
Android Wear OS 6, One UI Watch 9
Chipset
B520
-
Galaxy Watch Ultra2
Snapdragon SW6100 Wear Elite (3 nm)
CPU
B520
-
Galaxy Watch Ultra2
Penta-core (1x2.1 GHz & 4x 1.95 GHz)