Screen size
Galaxy Watch Ultra21.5"
M620Winner: 1.9"+21%
Quick verdict
Galaxy Watch Ultra2 leads the measured specs 11-5.
Measured wins
Galaxy Watch Ultra2
11
spec wins
Overall winner
Ties
3
equal specs
M620
5
spec wins
Screen size
Technology
Galaxy Watch Ultra2
GSM / HSPA / LTE
M620
GSM
2G bands
Galaxy Watch Ultra2
GSM 850 / 900 / 1800 / 1900
M620
GSM 900 / 1800 / 1900
3G bands
Galaxy Watch Ultra2
HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
M620
-
4G bands
Galaxy Watch Ultra2
LTE
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
equal specsSD card
Stereo speakers
M620
-
Speed
Galaxy Watch Ultra2
HSPA, LTE
M620
-
GPRS
Galaxy Watch Ultra2
-
M620
Class 10
EDGE
Galaxy Watch Ultra2
-
M620
No
Announced
Galaxy Watch Ultra2
Not announced yet
M620
2008, April. Released 2008, July
Status
Galaxy Watch Ultra2
Rumored
M620
Discontinued
Dimensions
Galaxy Watch Ultra2
-
M620
98 x 46.9 x 16.9 mm (3.86 x 1.85 x 0.67 in)
Weight
Galaxy Watch Ultra2
-
M620
81 g (2.86 oz)
Build
Galaxy Watch Ultra2
Sapphire crystal front, ceramic/sapphire crystal back, titanium frame (grade 4)
M620
-
SIM
Galaxy Watch Ultra2
eSIM
M620
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
M620
-
Type
Galaxy Watch Ultra2
Super AMOLED, 5000 nits (peak)
M620
TFT, 65K colors
Size
Galaxy Watch Ultra2
1.5 inches
M620
1.9 inches, 11.4 cm2 (~24.7% screen-to-body ratio)
Resolution
Galaxy Watch Ultra2
480 x 480 pixels (~327 ppi density)
M620
128 x 160 pixels (~108 ppi density)
Protection
Galaxy Watch Ultra2
Sapphire crystal glass
M620
-
OS
Galaxy Watch Ultra2
Android Wear OS 6, One UI Watch 9
M620
-
Chipset
Galaxy Watch Ultra2
Snapdragon SW6100 Wear Elite (3 nm)
M620
-
CPU
Galaxy Watch Ultra2
Penta-core (1x2.1 GHz & 4x 1.95 GHz)
M620
-
Card slot
Galaxy Watch Ultra2
No
M620
microSD (dedicated slot)
Internal
Galaxy Watch Ultra2
32GB 2GB RAM, 64GB 2GB RAM
M620
20MB
Phonebook
Galaxy Watch Ultra2
-
M620
1000 entries
Call records
Galaxy Watch Ultra2
-
M620
30 dialed, 30 received, 30 missed calls
Other
Galaxy Watch Ultra2
No
M620
-
Loudspeaker
Galaxy Watch Ultra2
Yes
M620
Yes
3.5mm jack
Galaxy Watch Ultra2
No
M620
No
Alert types
Galaxy Watch Ultra2
-
M620
Vibration; Downloadable polyphonic, MP3 ringtones
Other
Galaxy Watch Ultra2
-
M620
Dedicated music key
WLAN
Galaxy Watch Ultra2
Wi-Fi 802.11 a/b/g/n/ac, dual-band
M620
No
Bluetooth
Galaxy Watch Ultra2
6.0, A2DP, LE
M620
2.0, A2DP
Positioning
Galaxy Watch Ultra2
GPS (L1+L5), GLONASS, GALILEO, BDS
M620
No
NFC
Galaxy Watch Ultra2
Yes
M620
-
Radio
Galaxy Watch Ultra2
No
M620
Stereo FM radio, RDS
USB
Galaxy Watch Ultra2
No
M620
2.0
Sensors
Galaxy Watch Ultra2
Accelerometer, gyro, heart rate, barometer, altimeter, compass, SpO2, temperature (body), temperature (water), BioActive
M620
Messaging
Galaxy Watch Ultra2
-
M620
SMS, EMS, MMS
Browser
Galaxy Watch Ultra2
-
M620
WAP 2.0/xHTML
Games
Galaxy Watch Ultra2
-
M620
Yes + downloadable
Java
Galaxy Watch Ultra2
-
M620
Yes, MIDP 2.0
Other
Galaxy Watch Ultra2
-
M620
MP3/AAC/AAC+/eAAC+/WMA player Video player Predictive text input Organizer Voice memo
Type
Galaxy Watch Ultra2
Si/C Li-Ion 800 mAh
M620
Removable Li-Ion 800 mAh battery
Charging
Galaxy Watch Ultra2
10W wireless
M620
-
Stand-by
Galaxy Watch Ultra2
-
M620
Up to 400 h
Talk time
Galaxy Watch Ultra2
-
M620
Up to 3 h 20 min
Colors
Galaxy Watch Ultra2
Gray, Green
M620
Silver, Black
Models
Galaxy Watch Ultra2
SM-L715F
M620
-
Price
Galaxy Watch Ultra2
About 750 EUR
M620
About 70 EUR
SAR
Galaxy Watch Ultra2
-
M620
0.74 W/kg (head) 0.59 W/kg (body)
SAR EU
Galaxy Watch Ultra2
-
M620
0.44 W/kg (head)
Single
Galaxy Watch Ultra2
-
M620
VGA
Video
Galaxy Watch Ultra2
-
M620
Yes
Other
Galaxy Watch Ultra2
-
M620
No