Screen size
T1581.4"
Watch Fit 4Winner: 1.8"+23%
Quick verdict
Watch Fit 4 leads the measured specs 10-0.
Measured wins
T158
0
spec wins
Ties
3
equal specs
Watch Fit 4
10
spec wins
Overall winner
Screen size
Technology
T158
GSM
Watch Fit 4
No cellular connectivity
2G bands
T158
GSM 850 / 1900 , GSM 900 / 1800
Watch Fit 4
N/A
GPRS
T158
No
Watch Fit 4
No
EDGE
T158
No
Watch Fit 4
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
No
3G bands
T158
-
Watch Fit 4
N/A
4G bands
T158
-
Watch Fit 4
N/A
Speed
T158
-
Watch Fit 4
No
Announced
T158
2008
Watch Fit 4
2025, May 15
Status
T158
Discontinued
Watch Fit 4
Available. Released 2025, May 26
Dimensions
T158
103 x 45 x 13.5 mm, 60 cc (4.06 x 1.77 x 0.53 in)
Watch Fit 4
43 x 38 x 9.5 mm (1.69 x 1.50 x 0.37 in)
Weight
T158
80 g (2.82 oz)
Watch Fit 4
27 g (0.95 oz)
SIM
T158
Mini-SIM
Watch Fit 4
No
Build
T158
-
Watch Fit 4
Glass front, aluminum alloy frame, plastic back
Other
T158
-
Watch Fit 4
5 ATM water resistant
Type
T158
Monochrome graphics
Watch Fit 4
AMOLED, 2000 nits (peak)
Size
T158
1.4 inches, 6.0 cm2 (~12.9% screen-to-body ratio)
Watch Fit 4
1.82 inches
Resolution
T158
68 x 96 pixels (~84 ppi density)
Watch Fit 4
480 x 408 pixels (~347 ppi density)
Card slot
T158
No
Watch Fit 4
No
Phonebook
T158
100 entries
Watch Fit 4
No
Call records
T158
10 dialed, 10 received, 10 missed calls
Watch Fit 4
No
Other
T158
SMS storage up to 50 entries
Watch Fit 4
-
Internal
T158
-
Watch Fit 4
Unspecified
Other
T158
No
Watch Fit 4
No
Loudspeaker
T158
Yes
Watch Fit 4
Yes
3.5mm jack
T158
No
Watch Fit 4
No
WLAN
T158
No
Watch Fit 4
No
Bluetooth
T158
No
Watch Fit 4
5.2, LE
Positioning
T158
No
Watch Fit 4
GPS (L1+L5), GALILEO (E1+E5a), QZSS (L1+L5), BDS (B1l+B1C), GLONASS
Radio
T158
No
Watch Fit 4
No
USB
T158
No
Watch Fit 4
No
NFC
T158
-
Watch Fit 4
Yes (gray model only)
Sensors
T158
Watch Fit 4
Accelerometer, gyro, heart rate, SpO2, compass, barometer
Messaging
T158
SMS
Watch Fit 4
Email, IM
Browser
T158
No
Watch Fit 4
-
Games
T158
Yes
Watch Fit 4
No
Java
T158
No
Watch Fit 4
No
Other
T158
Predictive text input Calculator
Watch Fit 4
Pulse wave arrhythmia analysis
Type
T158
Removable Li-Ion battery
Watch Fit 4
Li-Ion 400 mAh
Stand-by
T158
Up to 150 h
Watch Fit 4
-
Talk time
T158
Up to 3 h
Watch Fit 4
-
Charging
T158
-
Watch Fit 4
5W wireless
Colors
T158
Black
Watch Fit 4
Black, Silver
Models
T158
-
Watch Fit 4
SYA-B19
Price
T158
-
Watch Fit 4
$ 121.00 / € 104.76