Screen size
U7520Winner: 2.8"+51%
Watch Ultimate Design Spring1.4"
Quick verdict
Watch Ultimate Design Spring leads the measured specs 9-6.
Measured wins
U7520
6
spec wins
Ties
2
equal specs
Watch Ultimate Design Spring
9
spec wins
Overall winner
Screen size
Technology
U7520
GSM / HSPA
Watch Ultimate Design Spring
HSPA / LTE
2G bands
U7520
GSM 900 / 1800 / 1900
Watch Ultimate Design Spring
N/A
3G bands
U7520
HSDPA 2100
Watch Ultimate Design Spring
HSDPA 850 / 900 / 1900 / 2100
Speed
U7520
HSPA 3.6/0.384 Mbps
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
Watch Ultimate Design Spring
HSPA, LTE
4G bands
U7520
-
Watch Ultimate Design Spring
LTE
Announced
U7520
2010. Released 2010
Watch Ultimate Design Spring
2026, April 20
Status
U7520
Discontinued
Watch Ultimate Design Spring
Available. Released 2026, May 08
Dimensions
U7520
106 x 56 x 13.5 mm (4.17 x 2.20 x 0.53 in)
Watch Ultimate Design Spring
42.9 x 42.9 x 10.8 mm (1.69 x 1.69 x 0.43 in)
Weight
U7520
105 g (3.70 oz)
Watch Ultimate Design Spring
91 g (3.21 oz)
SIM
U7520
Mini-SIM
Watch Ultimate Design Spring
eSIM
Build
U7520
-
Watch Ultimate Design Spring
Sapphire crystal front, titanium alloy front shell, ceramic back
Other
U7520
-
Watch Ultimate Design Spring
99 natural diamonds (0.8 carats) 5 ATM (maximum depth 40 meters when diving) IP68/IP69 dust tight and water resistant (high pressure water jets; immersible up to 1.5m for 30 min) ECG certified
Type
U7520
TFT resistive touchscreen, 256K colors
Watch Ultimate Design Spring
LTPO2 AMOLED, 3000 nits (peak)
Size
U7520
2.8 inches, 24.3 cm2 (~40.9% screen-to-body ratio)
Watch Ultimate Design Spring
1.38 inches
Resolution
U7520
240 x 320 pixels, 4:3 ratio (~143 ppi density)
Watch Ultimate Design Spring
466 x 466 pixels (~338 ppi density)
Protection
U7520
-
Watch Ultimate Design Spring
Sapphire crystal glass
Chipset
U7520
Qualcomm QSC6270
Watch Ultimate Design Spring
Kirin W80
OS
U7520
-
Watch Ultimate Design Spring
HarmonyOS 6.1
Card slot
U7520
microSDHC (dedicated slot)
Watch Ultimate Design Spring
No
Phonebook
U7520
Yes, Photocall
Watch Ultimate Design Spring
-
Call records
U7520
Yes
Watch Ultimate Design Spring
-
Internal
U7520
1GB 512MB RAM
Watch Ultimate Design Spring
-
Single
U7520
3.15 MP
Watch Ultimate Design Spring
-
Video
U7520
Yes
Watch Ultimate Design Spring
-
Other
U7520
No
Watch Ultimate Design Spring
-
Loudspeaker
U7520
Yes
Watch Ultimate Design Spring
Yes
3.5mm jack
U7520
No
Watch Ultimate Design Spring
No
WLAN
U7520
No
Watch Ultimate Design Spring
Wi-Fi 802.11 a/b/g/n/ac/6, dual-band
Bluetooth
U7520
2.0, A2DP
Watch Ultimate Design Spring
5.2, A2DP, LE
Positioning
U7520
No
Watch Ultimate Design Spring
GPS (L1+L5), GLONASS, GALILEO (L1+L5), QZSS (L1+L5), BDS
Radio
U7520
Stereo FM radio
Watch Ultimate Design Spring
No
USB
U7520
miniUSB 2.0
Watch Ultimate Design Spring
No
NFC
U7520
-
Watch Ultimate Design Spring
Yes
Sensors
U7520
Accelerometer
Watch Ultimate Design Spring
Accelerometer, gyro, heart rate, barometer, compass, SpO2, thermometer (body temperature), X-TAP
Messaging
U7520
SMS, MMS, Email, IM
Watch Ultimate Design Spring
-
Browser
U7520
WAP 2.0/xHTML, HTML
Watch Ultimate Design Spring
-
Games
U7520
Yes
Watch Ultimate Design Spring
-
Java
U7520
Yes, MIDP 2.0
Watch Ultimate Design Spring
-
Other
U7520
MP3/AAC+ player MP4/H.263 player Organizer Voice memo Predictive text input
Watch Ultimate Design Spring
Sleep apnea detection Heart Rate Variability (HRV) Arterial Stiffness Detection
Type
U7520
Removable Li-Ion 1000 mAh battery
Watch Ultimate Design Spring
Li-Ion 540 mAh
Charging
U7520
-
Watch Ultimate Design Spring
Wireless
Colors
U7520
White, Blue, Orange
Watch Ultimate Design Spring
Diamond Silver
Price
U7520
About 70 EUR
Watch Ultimate Design Spring
About 4000 EUR
Models
U7520
-
Watch Ultimate Design Spring
CHC-AL00
Other
U7520
-
Watch Ultimate Design Spring
No