Screen size
U1310Winner: 2.2"+32%
Watch Buds 21.5"
Quick verdict
Watch Buds 2 leads the measured specs 7-6.
Measured wins
U1310
6
spec wins
Ties
1
equal specs
Watch Buds 2
7
spec wins
Overall winner
Screen size
Technology
U1310
GSM / UMTS
Watch Buds 2
No cellular connectivity
2G bands
U1310
GSM 900 / 1800 / 1900
Watch Buds 2
N/A
3G bands
U1310
UMTS 2100
Watch Buds 2
N/A
Speed
U1310
Yes, 384 kbps
Watch Buds 2
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
No
4G bands
U1310
-
Watch Buds 2
N/A
GPRS
U1310
-
Watch Buds 2
No
EDGE
U1310
-
Watch Buds 2
No
Announced
U1310
2008, Q2
Watch Buds 2
2026, April 20
Status
U1310
Discontinued
Watch Buds 2
Available. Released 2026, April 20
Dimensions
U1310
108 x 47.5 x 14.5 mm, 70 cc (4.25 x 1.87 x 0.57 in)
Watch Buds 2
47 x 47 x 14.7 mm (1.85 x 1.85 x 0.58 in)
Weight
U1310
Watch Buds 2
54.5 g (1.90 oz)
SIM
U1310
Mini-SIM
Watch Buds 2
No
Build
U1310
-
Watch Buds 2
Titanium alloy frame, glass-fiber reinforced plastic back
Other
U1310
-
Watch Buds 2
Built-in wireless earbuds housed beneath the display; charging from the watch Compatible with standard 22mm straps
Type
U1310
TFT, 65K colors
Watch Buds 2
LTPO AMOLED, 3000 nits (peak)
Size
U1310
2.2 inches, 15.0 cm2 (~29.2% screen-to-body ratio)
Watch Buds 2
1.5 inches
Resolution
U1310
240 x 320 pixels, 4:3 ratio (~182 ppi density)
Watch Buds 2
466 x 466 pixels (~310 ppi density)
Card slot
U1310
microSD (dedicated slot)
Watch Buds 2
No
Phonebook
U1310
1000 entries
Watch Buds 2
-
Call records
U1310
20 dialed, 20 received, 20 missed calls
Watch Buds 2
-
Single
U1310
2 MP
Watch Buds 2
-
Video
U1310
Yes
Watch Buds 2
-
Single
U1310
VGA videocall camera
Watch Buds 2
-
Video
U1310
Watch Buds 2
-
Loudspeaker
U1310
Yes
Watch Buds 2
No
3.5mm jack
U1310
Yes
Watch Buds 2
No
WLAN
U1310
No
Watch Buds 2
No
Bluetooth
U1310
1.2, A2DP
Watch Buds 2
5.2, A2DP, LE
Positioning
U1310
No
Watch Buds 2
GPS, GLONASS, GALILEO, BDS
Radio
U1310
No
Watch Buds 2
No
USB
U1310
2.0
Watch Buds 2
No
NFC
U1310
-
Watch Buds 2
Yes
Sensors
U1310
Watch Buds 2
Accelerometer, gyro, heart rate, SpO2
Messaging
U1310
SMS, MMS, Email
Watch Buds 2
-
Browser
U1310
WAP 2.0/xHTML, RSS read
Watch Buds 2
-
Games
U1310
Yes
Watch Buds 2
-
Java
U1310
No
Watch Buds 2
-
Other
U1310
MP3/MP4/AAC player Predictive text input Organizer Photo editor Video streaming
Watch Buds 2
-
Type
U1310
Removable Li-Ion battery
Watch Buds 2
Li-Ion 410 mAh
Charging
U1310
-
Watch Buds 2
Wireless
Colors
U1310
Black
Watch Buds 2
Black, Silver
Models
U1310
-
Watch Buds 2
LBA-B19
Price
U1310
-
Watch Buds 2
About 440 EUR
OS
U1310
-
Watch Buds 2
HarmonyOS
Other
U1310
-
Watch Buds 2
No