Screen size
Galaxy Watch91.5"
M620Winner: 1.9"+23%
Quick verdict
Galaxy Watch9 leads the measured specs 11-6.
Measured wins
Galaxy Watch9
11
spec wins
Overall winner
Ties
2
equal specs
M620
6
spec wins
Screen size
Technology
Galaxy Watch9
GSM / HSPA / LTE
M620
GSM
2G bands
Galaxy Watch9
GSM 850 / 900 / 1800 / 1900
M620
GSM 900 / 1800 / 1900
3G bands
Galaxy Watch9
HSDPA 850 / 900 / 2100
M620
-
4G bands
Galaxy Watch9
LTE
M620
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
-
Speed
Galaxy Watch9
HSPA, LTE
M620
-
GPRS
Galaxy Watch9
-
M620
Class 10
EDGE
Galaxy Watch9
-
M620
No
Announced
Galaxy Watch9
Not announced yet
M620
2008, April. Released 2008, July
Status
Galaxy Watch9
Rumored
M620
Discontinued
Dimensions
Galaxy Watch9
-
M620
98 x 46.9 x 16.9 mm (3.86 x 1.85 x 0.67 in)
Weight
Galaxy Watch9
-
M620
81 g (2.86 oz)
Build
Galaxy Watch9
Glass front (Sapphire crystal), aluminum frame
M620
-
SIM
Galaxy Watch9
eSIM
M620
Mini-SIM
Other
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
M620
-
Type
Galaxy Watch9
Super AMOLED, 3000 nits (peak)
M620
TFT, 65K colors
Size
Galaxy Watch9
1.47 inches
M620
1.9 inches, 11.4 cm2 (~24.7% screen-to-body ratio)
Resolution
Galaxy Watch9
480 x 480 pixels (~327 ppi density)
M620
128 x 160 pixels (~108 ppi density)
Protection
Galaxy Watch9
Sapphire crystal
M620
-
OS
Galaxy Watch9
Android Wear OS 6, One UI Watch 9
M620
-
Chipset
Galaxy Watch9
Snapdragon SW6100 Wear Elite (3 nm)
M620
-
CPU
Galaxy Watch9
Penta-core (1x2.1 GHz & 4x 1.95 GHz)
M620
-
Card slot
Galaxy Watch9
No
M620
microSD (dedicated slot)
Internal
Galaxy Watch9
32GB 2GB RAM
M620
20MB
Phonebook
Galaxy Watch9
-
M620
1000 entries
Call records
Galaxy Watch9
-
M620
30 dialed, 30 received, 30 missed calls
Other
Galaxy Watch9
No
M620
-
Loudspeaker
Galaxy Watch9
Yes
M620
Yes
3.5mm jack
Galaxy Watch9
No
M620
No
Alert types
Galaxy Watch9
-
M620
Vibration; Downloadable polyphonic, MP3 ringtones
Other
Galaxy Watch9
-
M620
Dedicated music key
WLAN
Galaxy Watch9
Wi-Fi 802.11 a/b/g/n/ac, dual-band
M620
No
Bluetooth
Galaxy Watch9
6.0, A2DP, LE
M620
2.0, A2DP
Positioning
Galaxy Watch9
GPS (L1+L5), GLONASS, GALILEO, BDS
M620
No
NFC
Galaxy Watch9
Yes
M620
-
Radio
Galaxy Watch9
No
M620
Stereo FM radio, RDS
USB
Galaxy Watch9
No
M620
2.0
Sensors
Galaxy Watch9
Accelerometer, gyro, heart rate, barometer, altimeter, compass, SpO2, temperature (skin), BioActive, antioxidant index
M620
Messaging
Galaxy Watch9
-
M620
SMS, EMS, MMS
Browser
Galaxy Watch9
-
M620
WAP 2.0/xHTML
Games
Galaxy Watch9
-
M620
Yes + downloadable
Java
Galaxy Watch9
-
M620
Yes, MIDP 2.0
Other
Galaxy Watch9
-
M620
MP3/AAC/AAC+/eAAC+/WMA player Video player Predictive text input Organizer Voice memo
Type
Galaxy Watch9
Li-Ion 445 mAh
M620
Removable Li-Ion 800 mAh battery
Charging
Galaxy Watch9
10W wireless
M620
-
Stand-by
Galaxy Watch9
-
M620
Up to 400 h
Talk time
Galaxy Watch9
-
M620
Up to 3 h 20 min
Colors
Galaxy Watch9
Silver; other colors
M620
Silver, Black
SAR
Galaxy Watch9
-
M620
0.74 W/kg (head) 0.59 W/kg (body)
SAR EU
Galaxy Watch9
-
M620
0.44 W/kg (head)
Price
Galaxy Watch9
-
M620
About 70 EUR
Single
Galaxy Watch9
-
M620
VGA
Video
Galaxy Watch9
-
M620
Yes
Other
Galaxy Watch9
-
M620
No