Screen size
U8650 SonicWinner: 3.5"+57%
Watch Buds 21.5"
Quick verdict
U8650 Sonic leads the measured specs 7-5.
Measured wins
U8650 Sonic
7
spec wins
Overall winner
Ties
2
equal specs
Watch Buds 2
5
spec wins
Screen size
Technology
U8650 Sonic
GSM / HSPA
Watch Buds 2
No cellular connectivity
2G bands
U8650 Sonic
GSM 900 / 1800 / 1900
Watch Buds 2
N/A
3G bands
U8650 Sonic
HSDPA 900 / 2100
Watch Buds 2
N/A
Speed
U8650 Sonic
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
equal specs3.5mm jack
SD card
Stereo speakers
Watch Buds 2
No
4G bands
U8650 Sonic
-
Watch Buds 2
N/A
GPRS
U8650 Sonic
-
Watch Buds 2
No
EDGE
U8650 Sonic
-
Watch Buds 2
No
Announced
U8650 Sonic
2011, July
Watch Buds 2
2026, April 20
Status
U8650 Sonic
Discontinued
Watch Buds 2
Available. Released 2026, April 20
Dimensions
U8650 Sonic
116.3 x 60.5 x 11.9 mm (4.58 x 2.38 x 0.47 in)
Watch Buds 2
47 x 47 x 14.7 mm (1.85 x 1.85 x 0.58 in)
Weight
U8650 Sonic
120 g (4.23 oz)
Watch Buds 2
54.5 g (1.90 oz)
SIM
U8650 Sonic
Mini-SIM
Watch Buds 2
No
Build
U8650 Sonic
-
Watch Buds 2
Titanium alloy frame, glass-fiber reinforced plastic back
Other
U8650 Sonic
-
Watch Buds 2
Built-in wireless earbuds housed beneath the display; charging from the watch Compatible with standard 22mm straps
Type
U8650 Sonic
TFT, 256K colors
Watch Buds 2
LTPO AMOLED, 3000 nits (peak)
Size
U8650 Sonic
3.5 inches, 36.5 cm2 (~51.8% screen-to-body ratio)
Watch Buds 2
1.5 inches
Resolution
U8650 Sonic
320 x 480 pixels, 3:2 ratio (~165 ppi density)
Watch Buds 2
466 x 466 pixels (~310 ppi density)
OS
U8650 Sonic
Android 2.3.3 (Gingerbread)
Watch Buds 2
HarmonyOS
Card slot
U8650 Sonic
microSDHC (dedicated slot)
Watch Buds 2
No
Internal
U8650 Sonic
512MB 256MB RAM
Watch Buds 2
-
Single
U8650 Sonic
3.15 MP
Watch Buds 2
-
Video
U8650 Sonic
480p
Watch Buds 2
-
Other
U8650 Sonic
No
Watch Buds 2
-
Loudspeaker
U8650 Sonic
Yes
Watch Buds 2
No
3.5mm jack
U8650 Sonic
Yes
Watch Buds 2
No
WLAN
U8650 Sonic
Wi-Fi 802.11 b/g/n
Watch Buds 2
No
Bluetooth
U8650 Sonic
2.1, A2DP, EDR
Watch Buds 2
5.2, A2DP, LE
Positioning
U8650 Sonic
GPS, A-GPS
Watch Buds 2
GPS, GLONASS, GALILEO, BDS
NFC
U8650 Sonic
Yes (Huawei U8650NFC-1)
Watch Buds 2
Yes
USB
U8650 Sonic
microUSB 2.0
Watch Buds 2
No
Radio
U8650 Sonic
-
Watch Buds 2
No
Sensors
U8650 Sonic
Accelerometer, proximity, compass
Watch Buds 2
Accelerometer, gyro, heart rate, SpO2
Other
U8650 Sonic
MP3/WAV/eAAC+ player MP4/H.264 player Organizer Document viewer Photo viewer/editor Voice memo/dial/commands Predictive text input
Watch Buds 2
-
Type
U8650 Sonic
Removable Li-Ion 1400 mAh battery
Watch Buds 2
Li-Ion 410 mAh
Stand-by
U8650 Sonic
Up to 400 h
Watch Buds 2
-
Talk time
U8650 Sonic
Up to 8 h 20 min
Watch Buds 2
-
Charging
U8650 Sonic
-
Watch Buds 2
Wireless
Colors
U8650 Sonic
Black
Watch Buds 2
Black, Silver
Models
U8650 Sonic
u8650-1, U8650NFC-1
Watch Buds 2
LBA-B19
Price
U8650 Sonic
About 70 EUR
Watch Buds 2
About 440 EUR
Other
U8650 Sonic
-
Watch Buds 2
No