Features:
You must connect phone through Bluetooth before use.
Only for Android 2.3 BT3.0 Above Smartphones.
It is a health partner, be ready to help you to do physical exercise at any time.
Anti lost: Watch will send alarm after leaving the mobile phone a certain distance.(<15m )
Music player: you can enjoy your life with music.
Both as comfortable watch, smartphone companion and sports partner, it is the best product for yourself and your friends.   
The product has Phonebook, Messaging, Music and some other functions.
Perfect design, convenient to take along.

Note:
When use the product, you must download the Rwatch APK and install it.

Specifications:    
Brand: Rwatch
Model: M28
Material: TPU
Color: Black, White (Optional)
Screen type: 1.3" 128 * 128 display
Standby time: 120h
Talk time: 6h
CPU: Nucleus system 360MHz
SRAM: 4MB
Bluetooth: BT3.0
Battery: 3.7V/230mAh
Transmitting Range: <15m 
Multilanguage: English, Chinese or other language
Product size: 4 * 5 * 1cm / 1.57 * 1.96 * 0.4in
Product weight: 45g / 1.58oz
Package size: 12 * 8.2 * 6.5cm / 4.7 * 3.3 * 2.55in
Package weight: 164g / 5.78oz

Package list:  
1 * Smart watch  
1 * USB cable
1 * User manual (English)