Apple Watch Series 2 Aluminum 38mm vs UMIDIGI A3 Pro

Apple Watch Series 2 Aluminum 38mm

UMIDIGI A3 Pro

Network
2G network

N/A

GSM 850, 900, 1800, 1900
3G network

-

HSDPA 850, 900, 1700, 1900, 2100
4G network

-

LTE frequency band 1(2100), 3(1800), 4(1700/2100), 5(850), 7(2600), 8(900), 12(700), 18(800), 39(1900); LTE-TDD 2300, 2500, 2600 MHz
LTE speed

-

LTE, Cat4, 150 Mbps download, 51 Mbps upload
GPRS

No

Yes
EDGE

No

Yes

Design
Build

Aluminum/Ceramic back

Metal, plastic
SIM

No

Dual SIM (Nano-SIM, dual stand-by)
Height

38.6 mm

147.2 mm
Width

33.3 mm

70.2 mm
Thickness

11.4 mm

8.5 mm
Weight

28.2 g

187 g
Waterproof

50m

-
Colors

Case colors: silver, black; Band types: sport, blue, gold, gray; Band colors: gray, pink, rose gold, white, woven nylon, yellow

Gray, Gold

Connectivity
WLAN

Wi-Fi 802.11b, 802.11g, 802.11n

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

-

Yes
WLAN WiFi Direct

-

Yes
Wi-Fi display

-

Yes
WLAN WiFi Dual Band

-

Yes
USB

microUSB 2.0
Bluetooth

v4.0

v4.0
Bluetooth A2DP

Yes

Yes
NFC

Yes

-
GPS

Yes

Yes, with A-GPS
GLONASS

Yes

Yes
Beidou

-

Yes

Features
Messaging SMS

SMS(threaded view)

-
Messaging Email

Email

-
Messaging IM

IM

-
Messaging Push Mail

Push Mail

-
Java

No

-
Sensors

Accelerometer, gyro, heart rate

Accelerometer, compass, fingerprint, gyroscope, light, proximity

Main camera
Camera type

-

Dual
Main camera

12 MP, f/2.0 , 1.25 µm
5 MP
Primary camera resolution

-

4032 x 3024 pixels
Primary camera video

-

1080p@30fps
Primary camera flash

-

dual-LED flash
Primary camera phase detection autofocus

-

phase detection autofocus
Camera features

-

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