Screen size
Galaxy Watch91.5"
Z150Winner: 1.9"+23%
Quick verdict
Galaxy Watch9 leads the measured specs 11-5.
Measured wins
Galaxy Watch9
11
spec wins
Overall winner
Ties
3
equal specs
Z150
5
spec wins
Screen size
Technology
Galaxy Watch9
GSM / HSPA / LTE
Z150
GSM / UMTS
2G bands
Galaxy Watch9
GSM 850 / 900 / 1800 / 1900
Z150
GSM 900 / 1800 / 1900
3G bands
Galaxy Watch9
HSDPA 850 / 900 / 2100
Z150
UMTS 2100
4G bands
Galaxy Watch9
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
equal specsStereo speakers
Z150
-
Speed
Galaxy Watch9
HSPA, LTE
Z150
Yes, 384 kbps
Announced
Galaxy Watch9
Not announced yet
Z150
2006, February
Status
Galaxy Watch9
Rumored
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Discontinued
Dimensions
Galaxy Watch9
-
Z150
118 x 47 x 9.8 mm (4.65 x 1.85 x 0.39 in)
Weight
Galaxy Watch9
-
Z150
77 g (2.72 oz)
Build
Galaxy Watch9
Glass front (Sapphire crystal), aluminum frame
Z150
-
SIM
Galaxy Watch9
eSIM
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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
Z150
-
Type
Galaxy Watch9
Super AMOLED, 3000 nits (peak)
Z150
TFT, 256K colors
Size
Galaxy Watch9
1.47 inches
Z150
1.9 inches, 11.4 cm2 (~20.5% screen-to-body ratio)
Resolution
Galaxy Watch9
480 x 480 pixels (~327 ppi density)
Z150
176 x 220 pixels, 1.9 inch (~148 ppi density)
Protection
Galaxy Watch9
Sapphire crystal
Z150
-
OS
Galaxy Watch9
Android Wear OS 6, One UI Watch 9
Z150
-
Chipset
Galaxy Watch9
Snapdragon SW6100 Wear Elite (3 nm)
Z150
-
CPU
Galaxy Watch9
Penta-core (1x2.1 GHz & 4x 1.95 GHz)
Z150
-
Card slot
Galaxy Watch9
No
Z150
No
Internal
Galaxy Watch9
32GB 2GB RAM
Z150
50MB
Phonebook
Galaxy Watch9
-
Z150
1000 entries
Call records
Galaxy Watch9
-
Z150
20 dialed, 20 received, 20 missed calls
Other
Galaxy Watch9
No
Z150
-
Loudspeaker
Galaxy Watch9
Yes
Z150
Yes
3.5mm jack
Galaxy Watch9
No
Z150
No
Alert types
Galaxy Watch9
-
Z150
Vibration; Downloadable polyphonic, MP3 ringtones
WLAN
Galaxy Watch9
Wi-Fi 802.11 a/b/g/n/ac, dual-band
Z150
No
Bluetooth
Galaxy Watch9
6.0, A2DP, LE
Z150
1.1
Positioning
Galaxy Watch9
GPS (L1+L5), GLONASS, GALILEO, BDS
Z150
No
NFC
Galaxy Watch9
Yes
Z150
-
Radio
Galaxy Watch9
No
Z150
No
USB
Galaxy Watch9
No
Z150
1.1
Sensors
Galaxy Watch9
Accelerometer, gyro, heart rate, barometer, altimeter, compass, SpO2, temperature (skin), BioActive, antioxidant index
Z150
Messaging
Galaxy Watch9
-
Z150
SMS, MMS, Email
Browser
Galaxy Watch9
-
Z150
WAP 2.0/xHTML
Games
Galaxy Watch9
-
Z150
Yes + downloadable
Java
Galaxy Watch9
-
Z150
Yes, MIDP 2.0
Other
Galaxy Watch9
-
Z150
Video telephony & streaming MP3/AAC/AAC+ player Predictive text input Organizer Voice memo
Type
Galaxy Watch9
Li-Ion 445 mAh
Z150
Removable Li-Ion 900 mAh battery
Charging
Galaxy Watch9
10W wireless
Z150
-
Stand-by
Galaxy Watch9
-
Z150
Up to 270 h
Talk time
Galaxy Watch9
-
Z150
Up to 2 h 50 min
Colors
Galaxy Watch9
Silver; other colors
Z150
Black
SAR
Galaxy Watch9
-
Z150
0.62 W/kg (head) 0.59 W/kg (body)
SAR EU
Galaxy Watch9
-
Z150
0.60 W/kg (head)
Single
Galaxy Watch9
-
Z150
VGA
Video
Galaxy Watch9
-
Z150
QCIF
Single
Galaxy Watch9
-
Z150
VGA videocall camera
Video
Galaxy Watch9
-
Z150