<ul> <li>1.28" TFT high-definition color screen with outstanding atmosphere</li> <li>Rotating crown, fast direct access to target features</li> <li>Bluetooth calling, one-touch dialing with HD sound quality</li> <li>Music playback, rocking bass with intelligent control</li> <li>Smart split screen, quicker transfers to frequently used functions</li> <li>IP67 waterproof to meet daily needs</li> <li>Combination locks, high strength encryption to protect easy drop-down access privacy</li> <li>Shortcut functions, easy drop-down access</li> </ul> <p><strong>Specifications:</strong></p> <table> <tbody> <tr> <td><strong>Product parameters</strong></td> </tr> <tr> <td>Model</td> <td>i39</td> </tr> <tr> <td>Product Dimension</td> <td>260*46*10.5mm (Total length + case diameter + thickness)</td> </tr> <tr> <td>Net weight</td> <td>55g</td> </tr> <tr> <td>Bluetooth version</td> <td>5.0 BLE</td> </tr> <tr> <td>Calling Bluetooth version</td> <td>3.0 BLE</td> </tr> <tr> <td>Waterproof level</td> <td>IP67</td> </tr> <tr> <td>Chipset</td> <td>HS6621+128M flash, Music IC: ZhongKe</td> </tr> <tr> <td>Acceleration sensor</td> <td>SC7A20</td> </tr> <tr> <td>Optical</td> <td>SC7R30, 128KB+1M, Optical Heart Rate Sensor Module</td> </tr> <tr> <td>Display screen</td> <td>Type: 1.28 inch round colorful display</td> </tr> <tr> <td>Touch screen: Full touch control</td> </tr> <tr> <td>Resolution: 240*240px</td> </tr> <tr> <td>Battery</td> <td>Type: Polymer lithium battery</td> </tr> <tr> <td>Battery capacity: 260 mAh</td> </tr> <tr> <td>Charging time: about 60 minutes</td> </tr> <tr> <td>Working time: about 15 days</td> </tr> <tr> <td>Standby time: about 30 days</td> </tr> <tr> <td>Strap Material</td> <td>Leather</td> </tr> <tr> <td>Working temperature</td> <td>&nbsp;-20&deg;C ~ 50&deg;C</td> </tr> <tr> <td>Vibration motor</td> <td>Support</td> </tr> <tr> <td>Heart rate chip</td> <td>Support</td> </tr> <tr> <td>Motor</td> <td>Built-in, vibration reminder</td> </tr> <tr> <td><strong>Product Features</strong></td> </tr> <tr> <td>The main function</td> <td>Receive/Reject phone calls/ Dial phone call</td> </tr> <tr> <td>MP3 Player</td> </tr> <tr> <td>Heart rate monitoring</td> </tr> <tr> <td>Blood/Blood oxygen pressure monitoring</td> </tr> <tr> <td>Sleep monitoring</td> </tr> <tr> <td>Sedentary reminder</td> </tr> <tr> <td>Sports pedometer/calorie consumption/track record/exercise time</td> </tr> <tr> <td>Call reminder and display</td> </tr> <tr> <td>Message is pushed and displayed</td> </tr> <tr> <td>Remote control camera</td> </tr> <tr> <td>Automatically heart rate measurement</td> </tr> <tr> <td>Multi-Sport measurement</td> </tr> <tr> <td>Clock reminder</td> </tr> <tr> <td>Alarm reminder</td> </tr> <tr> <td>Dial</td> <td>5 kinds of dials default. APP customized watch faces are optional</td> </tr> <tr> <td>APP support language</td> <td>English, Japanese, Korean, German, Spanish, French, Italian, Russian, Portuguese, Arabic, Chinese,&nbsp;</td> </tr> <tr> <td>UI Support language</td> <td>English, Chinese, Spanish, French, Russian, Portuguese, Polish, etc total 23 languages</td> </tr> <tr> <td>Messages push up support language</td> <td>English, Chinese, Spanish, French, Russian, Portuguese, Polish, etc total 23 languages</td> </tr> <tr> <td>Support phone system</td> <td>For IOS 8.0 &amp; above, For Android 5.0 &amp; above</td> </tr> </tbody> </table>