Apple Watch Series 2 Aluminum 38mm vs vivo Z3

Apple Watch Series 2 Aluminum 38mm

vivo Z3

Network
2G network

N/A

GSM 850, 900, 1800, 1900; CDMA 800, 1900 & TD-SCDMA
3G network

-

HSDPA 850, 900, 2100
4G network

-

LTE frequency band 1(2100), 3(1800), 5(850), 8(900), 34(2000), 38(2600), 39(1900), 40(2300), 41(2500)
EV-DO speed

-

3.1 Mbps download, 1.8 Mbps upload
LTE speed

-

LTE, Cat15, 798 Mbps download, 226 Mbps upload
GPRS

No

Yes
EDGE

No

Yes

Design
Build

Aluminum/Ceramic back

Aluminium alloy, glass
SIM

No

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

38.6 mm

156 mm
Width

33.3 mm

75.6 mm
Thickness

11.4 mm

8.1 mm
Weight

28.2 g

164 g
Waterproof

50m

-
Colors

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

Blue, Black, Pink

Hardware
CPU

-

Octa-core
CPU

Dual-core 780 MHz ARM Cortex-A7

Dual-core 2.0 / 2.2 GHz Kryo 360 Gold
CPU(second)

Hexa-core 1.7 / 2.2 GHz Kryo 360 Silver
Chipset

Apple S2

Qualcomm SDM670 Snapdragon 670 / Qualcomm SDM710 Snapdragon 710
GPU

PowerVR G6200

Adreno 615 / Adreno 616
Memory RAM

512 MB

4, 6 GB
Internal storage

8 GB

64, 128 GB
Memory card

microSD, microSDHC, microSDXC
Memory card max

-

256 GB

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

microUSB 2.0
USB On-The-Go

-

Yes
Bluetooth

v4.0

v4.2
Bluetooth A2DP

Yes

Yes
bluetooth LE

-

Yes
Bluetooth EDR

-

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, infrared face recognition, light, proximity

Main camera
Camera type

-

Dual
Main camera

16 MP, f/2.0
2 MP, f/2.4
Primary camera resolution

-

4608 x 3456 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