<b>Specification :</b><br> Frequency: GSM 850/900/1800/1900 MHz<br> SIM card network: Support GSM 2G/2.5G (Not Included)<br> bluetooth: bluetooth 3.0<br> Battery: 380mAh<br> External memory: Support TF card up to 16GB<br> Display: 1.54 inch IPS LCD, 240 x 240 pixels<br> Camera: 0.3 MP<br><br> <b>Features: </b><br> Two ways to make / answer calls: One way, you need to insert a SIM card into the smart watch. The other way, you need to pair the smart watch with your mobile phone by bluetooth.<br><br> <b>How to download and install the sync APP (only for Android)？</b><br> APP: BT Notification<br> Approach 1: On the instructions has an icon with a QR code. You can use the Google play to scan the QR code and download the App.<br> If your mobile cannot recognize this QR code, you can download an app named' Barcode Reader', then continue to scan the QR code and download the app of smart watch.<br> Approach 2: You can directly search 'BT Notification' in Google play and download it to connect your smart watch.<br> If you have already installed the app, please check the version and update to the newest, so that all of the features can be used normally. Please update the app when it has a new version.<br><br> <b>【NOTE】</b><br> 1. This watch is bluetooth 3.0. All functions support android 4.3 and up smart phones. <br> 2. For Android phones, all functions work in Bluetooth mode. For iPhone, this smart watch just supports partial functions in Bluetooth mode (There is no sync app available, some features like notification push, remote photos, anti-lost, message receiving are unusable. Please see the function chart carefully before placing order!）<br> 3. After-Sales Service: If you have any question with the smart watch, please feel free to contact us. We will try our best to help you.<br><br> <b>Packaging Included:</b><br> 1 X Smart Watch<br> 1 X TF Card<br> 1 X User Manual<br> 1 X USB Cable<br>