Screen size
B520Winner: 1.8"+17%
Galaxy Watch91.5"
Quick verdict
Galaxy Watch9 leads the measured specs 11-7.
Measured wins
B520
7
spec wins
Ties
1
equal specs
Galaxy Watch9
11
spec wins
Overall winner
Screen size
Technology
B520
GSM
Galaxy Watch9
GSM / HSPA / LTE
2G bands
B520
GSM 900 / 1800
Galaxy Watch9
GSM 850 / 900 / 1800 / 1900
GPRS
B520
Class 10
Galaxy Watch9
-
EDGE
B520
No
Galaxy Watch9
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
SD card
Stereo speakers
-
3G bands
B520
-
Galaxy Watch9
HSDPA 850 / 900 / 2100
4G bands
B520
-
Galaxy Watch9
LTE
Speed
B520
-
Galaxy Watch9
HSPA, LTE
Announced
B520
2008, December. Released 2009
Galaxy Watch9
Not announced yet
Status
B520
Discontinued
Galaxy Watch9
Rumored
Dimensions
B520
96 x 47 x 17.5 mm (3.78 x 1.85 x 0.69 in)
Galaxy Watch9
-
Weight
B520
94 g (3.32 oz)
Galaxy Watch9
-
SIM
B520
Mini-SIM
Galaxy Watch9
eSIM
Build
B520
-
Galaxy Watch9
Glass front (Sapphire crystal), aluminum frame
Other
B520
-
Galaxy Watch9
MIL-STD-810H compliant* IP68 dust tight and water resistant (immersible up to 50m/5ATM) ECG certified Blood pressure monitor Armor aluminum 2 frame *does not guarantee ruggedness or use in extreme conditions
Type
B520
CSTN, 65K colors
Galaxy Watch9
Super AMOLED, 3000 nits (peak)
Size
B520
1.77 inches, 9.9 cm2 (~21.9% screen-to-body ratio)
Galaxy Watch9
1.47 inches
Resolution
B520
128 x 160 pixels (~116 ppi density)
Galaxy Watch9
480 x 480 pixels (~327 ppi density)
Other
B520
Wallpapers, screensavers
Galaxy Watch9
-
Protection
B520
-
Galaxy Watch9
Sapphire crystal
Card slot
B520
microSD (dedicated slot)
Galaxy Watch9
No
Phonebook
B520
1000 contacts, Photo call
Galaxy Watch9
-
Call records
B520
30 dialed, 30 received, 30 missed calls
Galaxy Watch9
-
Internal
B520
20MB
Galaxy Watch9
32GB 2GB RAM
Other
B520
No
Galaxy Watch9
No
Loudspeaker
B520
Yes
Galaxy Watch9
Yes
3.5mm jack
B520
Yes
Galaxy Watch9
No
WLAN
B520
No
Galaxy Watch9
Wi-Fi 802.11 a/b/g/n/ac, dual-band
Bluetooth
B520
No
Galaxy Watch9
6.0, A2DP, LE
Positioning
B520
No
Galaxy Watch9
GPS (L1+L5), GLONASS, GALILEO, BDS
Radio
B520
FM radio, recording
Galaxy Watch9
No
USB
B520
2.0
Galaxy Watch9
No
NFC
B520
-
Galaxy Watch9
Yes
Sensors
B520
Galaxy Watch9
Accelerometer, gyro, heart rate, barometer, altimeter, compass, SpO2, temperature (skin), BioActive, antioxidant index
Messaging
B520
SMS, MMS, Email
Galaxy Watch9
-
Browser
B520
WAP 2.0/xHTML, HTML
Galaxy Watch9
-
Games
B520
Yes
Galaxy Watch9
-
Java
B520
Yes, MIDP 2.0
Galaxy Watch9
-
Other
B520
Organizer Voice memo Predictive text input
Galaxy Watch9
-
Type
B520
Removable Li-Ion 800 mAh battery
Galaxy Watch9
Li-Ion 445 mAh
Stand-by
B520
Up to 390 h
Galaxy Watch9
-
Talk time
B520
Up to 7 h
Galaxy Watch9
-
Charging
B520
-
Galaxy Watch9
10W wireless
Colors
B520
Black
Galaxy Watch9
Silver; other colors
SAR EU
B520
0.49 W/kg (head)
Galaxy Watch9
-
Price
B520
About 40 EUR
Galaxy Watch9
-
OS
B520
-
Galaxy Watch9
Android Wear OS 6, One UI Watch 9
Chipset
B520
-
Galaxy Watch9
Snapdragon SW6100 Wear Elite (3 nm)
CPU
B520
-
Galaxy Watch9
Penta-core (1x2.1 GHz & 4x 1.95 GHz)