Feature 1 GSM 850/900/1800/1900 It's a mobile phone
Feature 2 1.54" 、240X240pixel,capacitance touch screen
Feature 3 Smart Bluetooh also can sync all push  Notifications
Feature 4 FM,MP3,Voice recorder
Feature 5 Pedometer,Sleep Monitor,Looking Phone,Anti lost, Sedentary reminder
Feature 6 Support TF card(Expand to 8gb)
Basic info:
Key words
Bluetooth sync watch and Phone watch
Model NO.
S28
Colors
Silver, Glod          
Size
58x39x12.5mm
Weight
55g
Screen type
Capacitive touch Screen, resolition: 240*240
Battery
3.7V/450mAh  Li-ion---- can take out to change battery.
Standby time
72hours
Talk time
6hours
Play music time
8hours
Take way
Handfree(speaker), earphone,bluetooth headset
Input Method
QWERTY keyboard---multiple languages and keyboards
Material
Metal+Silicon
Hardware info:
CPU
MTK6260--360MHz
ROM
8MB
RAM
8MB
Sim card slot
Yes--normal single sim card
2G GSM
GSM 850/900/1800/1900
3G
NO
TF card slot
Yes, support up to 8GB
Andriod OS
NO
WIFI
NO
GPS
NO
Sensor type
Yes--G-sensor
Speaker
8Ω/0.7W speaker x 1
MIC
Yes
Vibrate motor
Yes
FM radio
Yes
Camera
Yes--2.0M CMOS  take photos and video
Bluetooth
3.0---for bluetooth earphone also have BT sync function
Buttons
one button( power on/off,return)
USB port
5Pin Micro USB port for earphone and charge.
Stylus pen
NO
Waterproof
NO
Main functions:
Smart BT sync
Yes, can sync all Push Notifications from android phone.
After connect bluetooth with other phone can use: support Iphone and android phone, no need install apk.
Dial
Dial the number from the watch directly to make the call.
Phonebook
Sync phone's phonebook on the watch.
Call history
Sync phone's call history on the watch.
Audio player
Play and control phone's music
ANTI-lost
Yes--When the watch between with the phone have more than 8-10 meters, watch will have vibrate/ring alarm.
Below sync funcitons need install apk in the user's phone, just support andriod phone.
Looking Phone
Yes- the phone will ring, can easy find the phone.
Messaging
Sync new SMS, can read and reply SMS on the watch.
Remote Capture
Control remote camera,take photos on the watch.
Remote Notifications
Sync SMS,weather, email, wechat, twitter,facebook,skype..etc  can Sync all Push Notifications from android phone.
Sync Time and date
When the watch connect with the apk software, will auto sync time/date.
Change clock interface
NO
Dial
Dial the no. from the watch directly to make the call.
Phonebook
500
Call history
recceived+called+missed call
Messaging
SMS. MMS
File manager
Yes--Need insert micro sd memory card
Audio player
Support MP3/MID format, and all music files need save inside " my music" file in the TF card.
MP4 player
NO
Recording
Yes
Profiles
General, silent, Meeting, Outdoor,user's style
Alarm
Yes- have 5 alarms
Calculator
Yes
Calendar
Yes
FM radio
Yes-- need plug in earphone
Schedule power on/off
Yes--To set the timer switch
pedometer
Yes
Sleep Monitor
Yes
Sedentary reminder
Yes
Go internet
Yes--WAP2.0
Languages
Built-in 9 languages: English,French, German, Portuguese, Russian,  Spanish, Turkey,Arabia, Italy .
Package box/carton size
Box: 105X98X84MM    carton size: 513*220*435MM    50pcs / carton
Package
watch x1, usb cable x1, manual x1,earphone x1, batteryX1, charge plugX1
Warranty
Non-artificial damage for one year