Screen size
U8180 IDEOS X1Winner: 2.8"+46%
Watch Buds 21.5"
Quick verdict
U8180 IDEOS X1 leads the measured specs 7-6.
Measured wins
U8180 IDEOS X1
7
spec wins
Overall winner
Ties
1
equal specs
Watch Buds 2
6
spec wins
Screen size
Technology
U8180 IDEOS X1
GSM / HSPA
Watch Buds 2
No cellular connectivity
2G bands
U8180 IDEOS X1
GSM 850 / 900 / 1800 / 1900
Watch Buds 2
N/A
3G bands
U8180 IDEOS X1
HSDPA 900 / 2100
Watch Buds 2
N/A
Speed
U8180 IDEOS X1
HSPA 7.2/0.384 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
SD card
Stereo speakers
Watch Buds 2
No
4G bands
U8180 IDEOS X1
-
Watch Buds 2
N/A
GPRS
U8180 IDEOS X1
-
Watch Buds 2
No
EDGE
U8180 IDEOS X1
-
Watch Buds 2
No
Announced
U8180 IDEOS X1
2011, May
Watch Buds 2
2026, April 20
Status
U8180 IDEOS X1
Discontinued
Watch Buds 2
Available. Released 2026, April 20
Dimensions
U8180 IDEOS X1
104 x 56 x 13 mm (4.09 x 2.20 x 0.51 in)
Watch Buds 2
47 x 47 x 14.7 mm (1.85 x 1.85 x 0.58 in)
Weight
U8180 IDEOS X1
100 g (3.53 oz)
Watch Buds 2
54.5 g (1.90 oz)
SIM
U8180 IDEOS X1
Mini-SIM
Watch Buds 2
No
Build
U8180 IDEOS X1
-
Watch Buds 2
Titanium alloy frame, glass-fiber reinforced plastic back
Other
U8180 IDEOS X1
-
Watch Buds 2
Built-in wireless earbuds housed beneath the display; charging from the watch Compatible with standard 22mm straps
Type
U8180 IDEOS X1
TFT, 256K colors
Watch Buds 2
LTPO AMOLED, 3000 nits (peak)
Size
U8180 IDEOS X1
2.8 inches, 24.3 cm2 (~41.7% screen-to-body ratio)
Watch Buds 2
1.5 inches
Resolution
U8180 IDEOS X1
240 x 320 pixels, 4:3 ratio (~143 ppi density)
Watch Buds 2
466 x 466 pixels (~310 ppi density)
OS
U8180 IDEOS X1
Android 2.2 (Froyo)
Watch Buds 2
HarmonyOS
Chipset
U8180 IDEOS X1
Qualcomm MSM7225 Snapdragon S1
Watch Buds 2
-
CPU
U8180 IDEOS X1
528 MHz ARM 11
Watch Buds 2
-
GPU
U8180 IDEOS X1
No
Watch Buds 2
-
Card slot
U8180 IDEOS X1
microSDHC (dedicated slot)
Watch Buds 2
No
Internal
U8180 IDEOS X1
512MB 256MB RAM
Watch Buds 2
-
Single
U8180 IDEOS X1
3.15 MP
Watch Buds 2
-
Video
U8180 IDEOS X1
320p@24fps
Watch Buds 2
-
Other
U8180 IDEOS X1
No
Watch Buds 2
-
Loudspeaker
U8180 IDEOS X1
Yes
Watch Buds 2
No
3.5mm jack
U8180 IDEOS X1
Yes
Watch Buds 2
No
WLAN
U8180 IDEOS X1
Wi-Fi 802.11 b/g/n
Watch Buds 2
No
Bluetooth
U8180 IDEOS X1
2.1, A2DP, EDR
Watch Buds 2
5.2, A2DP, LE
Positioning
U8180 IDEOS X1
GPS, A-GPS
Watch Buds 2
GPS, GLONASS, GALILEO, BDS
Radio
U8180 IDEOS X1
FM radio, RDS
Watch Buds 2
No
USB
U8180 IDEOS X1
microUSB 2.0
Watch Buds 2
No
NFC
U8180 IDEOS X1
-
Watch Buds 2
Yes
Sensors
U8180 IDEOS X1
Accelerometer, proximity, compass
Watch Buds 2
Accelerometer, gyro, heart rate, SpO2
Other
U8180 IDEOS X1
MP3/WAV/eAAC+ player MP4/H.264 player Organizer Document viewer Photo viewer/editor Voice memo Predictive text input
Watch Buds 2
-
Type
U8180 IDEOS X1
Removable Li-Ion 1200 mAh battery
Watch Buds 2
Li-Ion 410 mAh
Stand-by
U8180 IDEOS X1
Up to 336 h
Watch Buds 2
-
Talk time
U8180 IDEOS X1
Up to 4 h
Watch Buds 2
-
Charging
U8180 IDEOS X1
-
Watch Buds 2
Wireless
Colors
U8180 IDEOS X1
Black
Watch Buds 2
Black, Silver
Price
U8180 IDEOS X1
About 70 EUR
Watch Buds 2
About 440 EUR
Models
U8180 IDEOS X1
-
Watch Buds 2
LBA-B19
Other
U8180 IDEOS X1
-
Watch Buds 2
No