Oppo U3 vs Walton Primo ZX vs SONY Smart Watch 2

BASIC INFO
Model No Oppo U3 - SmartWatch 2 SW2
Status Available. Released 2015, April - Available
Release Date 2015, January - Released 2013, October
Dimension 156.8 x 81 x 8 mm (6.17 x 3.19 x 0.31 in) 150.6 x 62 x 9.7 mm 42 x 41 x 9 mm (1.65 x 1.61 x 0.35 in)
Weight 195 g (6.88 oz) 150 g 122.5 g
Colors Black, White - Leather Brown, Black, Silver
Body Metrial - - Aluminum
W & D Proof - - IP57 certified - dust and water resistant - Water resistant up to 1 meter and 30 minutes - Compatible with standard 24mm straps
SIM Type Dual SIM (Nano-SIM/ Micro-SIM, dual stand-by) - No
Technology GSM/LTE - -
OS Android OS, v4.4.4 (KitKat) Android OS, v4.2.2 (Jelly Bean) Android OS, v4.0
PROSESSING
Processor Octa-core 1.7 GHz Cortex-A53 Quad-core 2.2 GHz Krait, Qualcomm Snapdragon 800 -
Chipset Mediatek MT6752 - -
GPU Octa-core 1.7 GHz Cortex-A53 - -
MEMORY
RAM 2 GB - -
Storage 16 GB - -
Card Slot microSD, up to 32 GB (dedicated slot) 32 GB storage, 3 GB RAM, up to 64 GB microSD card Supported -
DISPLAY
Size 5.9 inches 1080 x 1920 pixels, 5.5 inches (~401 ppi pixel density) 1.6 inches, 8.1 cm2 (~46.8% screen-to-body ratio)
Type IPS LCD capacitive touchscreen, 16M colors IPS LCD capacitive touchscreen, 16M colors Capacitive touchscreen
Resolation 1080 x 1920 pixels - 220 x 176 Pixels
PPI 377 ppi pixel density - 176ppi
Multi touch Yes - Yes
Protection - - Yes
CAMERA
Primary 13 MP 16 MP,phase detection autofocus 5312 x 2988 pixels, LED flash No
Video Yes,1080p@30fps 2160p@30fps, 1080p@60fps, 720p@120fps, HDR, video stabilization, dual-video rec. -
Flash LED Flash - -
Features Geo-tagging, touch focus, face detection, HDR, panorama - -
Selfie Yes, 5 MP Yes, 8 MP -
BATTERY
Battery Li-Ion battery Non-removable Li-Ion 2750 mAh battery Li-ion
Capacity 3100 mAh - 140 mah
Removable Non-removable - Non-Removable
StandBy Up to 400 h (3G) - Upto 96 Hours
Talk Time Up to 10 h (3G) - -
Music Play - - -
Browsing HTML5 - -
Video Playback - - -
F Charging - - -
W Charging - - -
NETWORK
2G Network GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 GSM 850 / 900 / 1800 / 1900 -
3G Network TD-SCDMA HSDPA 850 / 1700 / 1900 / 2100 -
4G Network LTE band 38(2600), 39(1900), 40(2300), 41(2500) - -
Speed HSPA, LTE - -
5G - - -
CONECTIVY
WALAN Wi-Fi 802.11 a/b/g/n, dual-band, hotspot Wi-Fi 802.11 a/b/g/n, Wi-Fi hotspot -
BlueTooth Yes, v4.0 v4.0, A2DP, LE Bluetooth 3.0
USB Yes, microUSB v2.0 microUSB v2.0 -
GPS Yes, with A-GPS support Yes, with A-GPS, GLONASS -
NFC - - Yes
Audio jeck 3.5mm jack - -
OTHERS
Sensors Accelerometer, proximity, compass - Yes
Radio FM radio FM Radio -
SARUS - - -
SAREU - - -
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