Screen size
equal specsWatch Buds 21.5"
Watch Ultimate 21.5"
Quick verdict
Watch Ultimate 2 leads the measured specs 6-2.
Measured wins
Watch Buds 2
2
spec wins
Ties
6
equal specs
Watch Ultimate 2
6
spec wins
Overall winner
Screen size
equal specsTechnology
Watch Buds 2
No cellular connectivity
Watch Ultimate 2
GSM / HSPA / LTE
2G bands
Watch Buds 2
N/A
Watch Ultimate 2
GSM 850 / 900 / 1800 / 1900
3G bands
Watch Buds 2
N/A
Watch Ultimate 2
HSDPA 850 / 900 / 1900 / 2100
4G bands
Watch Buds 2
N/A
Resolution
equal specsRefresh 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
equal specsSD card
equal specsStereo speakers
Watch Ultimate 2
LTE
Speed
Watch Buds 2
No
Watch Ultimate 2
HSPA, LTE
GPRS
Watch Buds 2
No
Watch Ultimate 2
-
EDGE
Watch Buds 2
No
Watch Ultimate 2
-
Announced
Watch Buds 2
2026, April 20
Watch Ultimate 2
2025, September 19
Status
Watch Buds 2
Available. Released 2026, April 20
Watch Ultimate 2
Available. Released 2025, September 29
Dimensions
Watch Buds 2
47 x 47 x 14.7 mm (1.85 x 1.85 x 0.58 in)
Watch Ultimate 2
48.5 x 48.5 x 12.9 mm - Black47.8 x 47.8 x 12.9 mm - Blue
Weight
Watch Buds 2
54.5 g (1.90 oz)
Watch Ultimate 2
80.5 g (2.86 oz)
Build
Watch Buds 2
Titanium alloy frame, glass-fiber reinforced plastic back
Watch Ultimate 2
Sapphire crystal front, cerramic bezzel, zirconium front case, ceramic back
SIM
Watch Buds 2
No
Watch Ultimate 2
eSIM
Other
Watch Buds 2
Built-in wireless earbuds housed beneath the display; charging from the watch Compatible with standard 22mm straps
Watch Ultimate 2
150m swimproof/diving (EN13319, ISO 22810:2010) IP68 dust tight and water resistant (immersible up to 150m/20ATM) ECG certified
Type
Watch Buds 2
LTPO AMOLED, 3000 nits (peak)
Watch Ultimate 2
LTPO2 AMOLED, 3500 nits (peak)
Size
Watch Buds 2
1.5 inches
Watch Ultimate 2
1.5 inches
Resolution
Watch Buds 2
466 x 466 pixels (~310 ppi density)
Watch Ultimate 2
466 x 466 pixels (~310 ppi density)
OS
Watch Buds 2
HarmonyOS
Watch Ultimate 2
HarmonyOS 5.1
Card slot
Watch Buds 2
No
Watch Ultimate 2
No
Internal
Watch Buds 2
-
Watch Ultimate 2
Unspecified
Other
Watch Buds 2
No
Watch Ultimate 2
No
Loudspeaker
Watch Buds 2
No
Watch Ultimate 2
Yes
3.5mm jack
Watch Buds 2
No
Watch Ultimate 2
No
WLAN
Watch Buds 2
No
Watch Ultimate 2
Wi-Fi 802.11 a/b/g/n/ac/6
Bluetooth
Watch Buds 2
5.2, A2DP, LE
Watch Ultimate 2
5.2, A2DP, LE
Positioning
Watch Buds 2
GPS, GLONASS, GALILEO, BDS
Watch Ultimate 2
GPS (L1+L5), BDS (B1I+B1c), GALILEO (E1+E5a), QZSS (L1+L5), GLONASS
NFC
Watch Buds 2
Yes
Watch Ultimate 2
Yes
Radio
Watch Buds 2
No
Watch Ultimate 2
No
USB
Watch Buds 2
No
Watch Ultimate 2
No
Sensors
Watch Buds 2
Accelerometer, gyro, heart rate, SpO2
Watch Ultimate 2
Accelerometer, gyro, heart rate, barometer, compass, SpO2, thermometer (body temperature), X-TAP
Other
Watch Buds 2
-
Watch Ultimate 2
Sonar-based underwater communication (Nearlink, up to 30m distance) BDS Satellite Messaging - China only Heart Rate Variability (HRV) Arterial Stiffness Detection
Type
Watch Buds 2
Li-Ion 410 mAh
Watch Ultimate 2
Li-Ion 867 mAh
Charging
Watch Buds 2
Wireless
Watch Ultimate 2
10W wireless
Colors
Watch Buds 2
Black, Silver
Watch Ultimate 2
Black, Blue
Models
Watch Buds 2
LBA-B19
Watch Ultimate 2
MCH-AL00
Price
Watch Buds 2
About 440 EUR
Watch Ultimate 2
€ 849.99