Oppo Watch 2 46mm LTE vs UMIDIGI A3S

Oppo Watch 2 46mm LTE

UMIDIGI A3S

Network
2G network

N/A

GSM 850, 900, 1800, 1900
3G network

HSDPA 850, 900, 2100

W-CDMA 850, 900, 1700, 1900, 2100
4G network

1, 3, 5, 8, 34, 38, 39, 40, 41 - China

LTE frequency band 1(2100), 2(1900), 3(1800), 4(1700), 5(850), 7(2600), 8(900), 12(700), 13(700), 17(700), 18(850), 19(850), 20(800), 26(850), 28(700), 38(2600), 40(2300), 41(2500)
HSDPA speed

42.2 Mbps

-
HSUPA speed

5.76 Mbps

-
LTE speed

-

LTE Cat 4, 150 Mbps download, 51 Mbps upload
GPRS

-

Yes
EDGE

-

Yes

Main camera
Camera type

-

Dual
Primary camera

No

-
Main camera

16 MP, f/2.0 , 0.26" , 1.132 µm
5 MP
Primary camera resolution

-

4608 x 3456 pixels
Primary camera video

-

1080p@30fps
Primary camera flash

-

dual LED flash
Camera features

-

Autofocus, continuous shooting, digital zoom, digital image stabilization, geotagging, panorama, HDR, touch focus, face detection, white balance settings, ISO settings, exposure compensation, self-timer, scene-mode, phase detection autofocus

Connectivity
WLAN

Wi-Fi 802.11b, 802.11g, 802.11n

Wi-Fi 802.11a, 802.11b, 802.11g, 802.11n, 802.11n 5Ghz, 802.11ac
WLAN WiFi Hotspot

-

Yes
WLAN WiFi Direct

-

Yes
Wi-Fi display

-

Yes
WLAN WiFi Dual Band

-

Yes
USB

No

microUSB 2.0
USB On-The-Go

-

Yes
Bluetooth

v5.0

v5.0
Bluetooth A2DP

Yes

Yes
bluetooth HID

-

Yes
bluetooth LE

Yes

Yes
NFC

Yes

-
GPS

Yes, with A-GPS

Yes, with A-GPS
GLONASS

Yes

Yes
GALILEO

Yes

Yes
Beidou

-

Yes
BDS

Yes

-