Screen size
U7520Winner: 2.8"+35%
Watch Fit 41.8"
Quick verdict
Watch Fit 4 leads the measured specs 8-6.
Measured wins
U7520
6
spec wins
Ties
2
equal specs
Watch Fit 4
8
spec wins
Overall winner
Screen size
Technology
U7520
GSM / HSPA
Watch Fit 4
No cellular connectivity
2G bands
U7520
GSM 900 / 1800 / 1900
Watch Fit 4
N/A
3G bands
U7520
HSDPA 2100
Watch Fit 4
N/A
Speed
U7520
HSPA 3.6/0.384 Mbps
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
Stereo speakers
No
4G bands
U7520
-
Watch Fit 4
N/A
GPRS
U7520
-
Watch Fit 4
No
EDGE
U7520
-
Watch Fit 4
No
Announced
U7520
2010. Released 2010
Watch Fit 4
2025, May 15
Status
U7520
Discontinued
Watch Fit 4
Available. Released 2025, May 26
Dimensions
U7520
106 x 56 x 13.5 mm (4.17 x 2.20 x 0.53 in)
Watch Fit 4
43 x 38 x 9.5 mm (1.69 x 1.50 x 0.37 in)
Weight
U7520
105 g (3.70 oz)
Watch Fit 4
27 g (0.95 oz)
SIM
U7520
Mini-SIM
Watch Fit 4
No
Build
U7520
-
Watch Fit 4
Glass front, aluminum alloy frame, plastic back
Other
U7520
-
Watch Fit 4
5 ATM water resistant
Type
U7520
TFT resistive touchscreen, 256K colors
Watch Fit 4
AMOLED, 2000 nits (peak)
Size
U7520
2.8 inches, 24.3 cm2 (~40.9% screen-to-body ratio)
Watch Fit 4
1.82 inches
Resolution
U7520
240 x 320 pixels, 4:3 ratio (~143 ppi density)
Watch Fit 4
480 x 408 pixels (~347 ppi density)
Chipset
U7520
Qualcomm QSC6270
Watch Fit 4
-
Card slot
U7520
microSDHC (dedicated slot)
Watch Fit 4
No
Phonebook
U7520
Yes, Photocall
Watch Fit 4
No
Call records
U7520
Yes
Watch Fit 4
No
Internal
U7520
1GB 512MB RAM
Watch Fit 4
Unspecified
Single
U7520
3.15 MP
Watch Fit 4
-
Video
U7520
Yes
Watch Fit 4
-
Other
U7520
No
Watch Fit 4
-
Loudspeaker
U7520
Yes
Watch Fit 4
Yes
3.5mm jack
U7520
No
Watch Fit 4
No
WLAN
U7520
No
Watch Fit 4
No
Bluetooth
U7520
2.0, A2DP
Watch Fit 4
5.2, LE
Positioning
U7520
No
Watch Fit 4
GPS (L1+L5), GALILEO (E1+E5a), QZSS (L1+L5), BDS (B1l+B1C), GLONASS
Radio
U7520
Stereo FM radio
Watch Fit 4
No
USB
U7520
miniUSB 2.0
Watch Fit 4
No
NFC
U7520
-
Watch Fit 4
Yes (gray model only)
Sensors
U7520
Accelerometer
Watch Fit 4
Accelerometer, gyro, heart rate, SpO2, compass, barometer
Messaging
U7520
SMS, MMS, Email, IM
Watch Fit 4
Email, IM
Browser
U7520
WAP 2.0/xHTML, HTML
Watch Fit 4
-
Games
U7520
Yes
Watch Fit 4
No
Java
U7520
Yes, MIDP 2.0
Watch Fit 4
No
Other
U7520
MP3/AAC+ player MP4/H.263 player Organizer Voice memo Predictive text input
Watch Fit 4
Pulse wave arrhythmia analysis
Type
U7520
Removable Li-Ion 1000 mAh battery
Watch Fit 4
Li-Ion 400 mAh
Charging
U7520
-
Watch Fit 4
5W wireless
Colors
U7520
White, Blue, Orange
Watch Fit 4
Black, Silver
Price
U7520
About 70 EUR
Watch Fit 4
$ 121.00 / € 104.76
Models
U7520
-
Watch Fit 4
SYA-B19
Other
U7520
-
Watch Fit 4
No