The product has Call Notice， Sync Time， Find Phone， SOS， Pacer， Bluetooth Pictures functions. It is very convenient for your life. <br><br><strong>Features:</strong> <br>You must connect phone through Bluetooth before use. <br>For IOS 6.0 Android 4.3 above smartphones. <br>It support Call/Message/E-mail/Event Notice， convenient to use.   <br>Sync Time: The watch time will synchronize with mobile phone time after finished buletooth time calibration. <br>SOS Use: Just support for android， NOT support for IOS. <br>Find Phone: Perform the fine phone function， the mobile phone will alarm and/or vibrate to remind user. <br>It has functions such as Pacer， Safety range notice， EL Backlight， 5 Alarms， Chime and so on. <br>As a smartphone companion and sports partner， it is the best product for yourself and your friends.    <br>Perfect design， convenient to take along. <br><br><strong>Note:</strong> <br>Before you use it， you must download APP. <br><br><strong>Specifications:  </strong> <br>Brand: Youngs  <br>Model: PS1503 <br>Starp Material: Resin <br>Color: Camouflage Green， Camouflage Blue， Camouflage Yellow， Green， Blue， Red (Optional)       <br>Bluetooth: 4.0 <br>Battery: 170 mAh    <br>Water Resistance: 100M  <br>Product size: Approx. 25.5 * 5.0 * 1.3cm / 10 * 1.97 * 0.5oz <br>Product weight: Approx. 72g / 2.53oz <br>Package size: Approx. 8.8 * 8.8 * 8.8cm / 3.5 * 3.5 * 3.5in <br>Package weight: Approx. 272g / 9.66oz <br><br><strong>Package list:  </strong> <br>1 * Smart watch