Screen size
Impulse 4GWinner: 3.8"+64%
Watch Ultimate Design Spring1.4"
Quick verdict
Watch Ultimate Design Spring leads the measured specs 8-7.
Measured wins
Impulse 4G
7
spec wins
Ties
1
equal specs
Watch Ultimate Design Spring
8
spec wins
Overall winner
Screen size
Technology
Impulse 4G
GSM / HSPA
Watch Ultimate Design Spring
HSPA / LTE
2G bands
Impulse 4G
GSM 850 / 900 / 1800 / 1900
Watch Ultimate Design Spring
N/A
3G bands
Impulse 4G
HSDPA 850 / 1900 / 2100
Watch Ultimate Design Spring
HSDPA 850 / 900 / 1900 / 2100
Speed
Impulse 4G
HSPA 14.4/5.76 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
SD card
Stereo speakers
Watch Ultimate Design Spring
HSPA, LTE
4G bands
Impulse 4G
-
Watch Ultimate Design Spring
LTE
Announced
Impulse 4G
2011, September. Released 2011, September
Watch Ultimate Design Spring
2026, April 20
Status
Impulse 4G
Discontinued
Watch Ultimate Design Spring
Available. Released 2026, May 08
Dimensions
Impulse 4G
120 x 65 x 11.6 mm (4.72 x 2.56 x 0.46 in)
Watch Ultimate Design Spring
42.9 x 42.9 x 10.8 mm (1.69 x 1.69 x 0.43 in)
Weight
Impulse 4G
130 g (4.59 oz)
Watch Ultimate Design Spring
91 g (3.21 oz)
SIM
Impulse 4G
Mini-SIM
Watch Ultimate Design Spring
eSIM
Build
Impulse 4G
-
Watch Ultimate Design Spring
Sapphire crystal front, titanium alloy front shell, ceramic back
Other
Impulse 4G
-
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
Impulse 4G
TFT
Watch Ultimate Design Spring
LTPO2 AMOLED, 3000 nits (peak)
Size
Impulse 4G
3.8 inches, 41.1 cm2 (~52.7% screen-to-body ratio)
Watch Ultimate Design Spring
1.38 inches
Resolution
Impulse 4G
480 x 800 pixels, 5:3 ratio (~246 ppi density)
Watch Ultimate Design Spring
466 x 466 pixels (~338 ppi density)
Protection
Impulse 4G
-
Watch Ultimate Design Spring
Sapphire crystal glass
OS
Impulse 4G
Android 2.2 (Froyo)
Watch Ultimate Design Spring
HarmonyOS 6.1
Chipset
Impulse 4G
Qualcomm MSM7230
Watch Ultimate Design Spring
Kirin W80
CPU
Impulse 4G
800 MHz Scorpion
Watch Ultimate Design Spring
-
GPU
Impulse 4G
Adreno 205
Watch Ultimate Design Spring
-
Card slot
Impulse 4G
microSDHC (dedicated slot)
Watch Ultimate Design Spring
No
Internal
Impulse 4G
512MB RAM
Watch Ultimate Design Spring
-
Single
Impulse 4G
5 MP, AF
Watch Ultimate Design Spring
-
Features
Impulse 4G
LED flash
Watch Ultimate Design Spring
-
Video
Impulse 4G
720p@30fps
Watch Ultimate Design Spring
-
Other
Impulse 4G
No
Watch Ultimate Design Spring
-
Loudspeaker
Impulse 4G
Yes
Watch Ultimate Design Spring
Yes
3.5mm jack
Impulse 4G
Yes
Watch Ultimate Design Spring
No
WLAN
Impulse 4G
Wi-Fi 802.11 b/g/n
Watch Ultimate Design Spring
Wi-Fi 802.11 a/b/g/n/ac/6, dual-band
Bluetooth
Impulse 4G
2.1, A2DP, EDR
Watch Ultimate Design Spring
5.2, A2DP, LE
Positioning
Impulse 4G
GPS, A-GPS
Watch Ultimate Design Spring
GPS (L1+L5), GLONASS, GALILEO (L1+L5), QZSS (L1+L5), BDS
Radio
Impulse 4G
No
Watch Ultimate Design Spring
No
USB
Impulse 4G
microUSB 2.0
Watch Ultimate Design Spring
No
NFC
Impulse 4G
-
Watch Ultimate Design Spring
Yes
Sensors
Impulse 4G
Accelerometer, proximity, compass
Watch Ultimate Design Spring
Accelerometer, gyro, heart rate, barometer, compass, SpO2, thermometer (body temperature), X-TAP
Other
Impulse 4G
MP3/WAV/eAAC+ player MP4/H.264 player Organizer Document viewer Photo viewer/editor Voice memo/dial Predictive text input
Watch Ultimate Design Spring
Sleep apnea detection Heart Rate Variability (HRV) Arterial Stiffness Detection
Type
Impulse 4G
Removable Li-Ion 1500 mAh battery
Watch Ultimate Design Spring
Li-Ion 540 mAh
Stand-by
Impulse 4G
Up to 240 h
Watch Ultimate Design Spring
-
Talk time
Impulse 4G
Up to 4 h
Watch Ultimate Design Spring
-
Charging
Impulse 4G
-
Watch Ultimate Design Spring
Wireless
Colors
Impulse 4G
Black
Watch Ultimate Design Spring
Diamond Silver
Price
Impulse 4G
About 80 EUR
Watch Ultimate Design Spring
About 4000 EUR
Models
Impulse 4G
-
Watch Ultimate Design Spring
CHC-AL00
Other
Impulse 4G
-
Watch Ultimate Design Spring
No