Function: Passometer Sleep Tracker Message Reminder Call Reminder Answer Call Dial Call Remote Control Push Message Altitude Meter.</br>Compatibility: All Android and iOS Mobile Phone & Android Tablet PC. Android Mobile Phone: Samsung HTC Sony LG HUAWEI ZTE OPPO XIAOMI and so on. iOS Mobile Phone: iPhone 6 iPhone 6 plus iPhone 5 iPhone 5s  iPhone 4 iPhone 4s (This APP can' t be installed by iOS Apple system can' t sync SMS and Bluetooth push information but other functions can be used by iPhone); Android Tablet PC: Samsung Nexus Onda Newsmy and so on.</br>Bidirectional anti loss: Anti lost remind Bidirectional search</br>Entertainment: MP3 / MP4 local playback; Bluetooth music playing</br>NFC: No need to search bluetooth pairing electronic business card</br></br>Product Description</br></br><b>Parameters:</b> <br> <br>- CPU: 533MHz MTK6260A <br>- Memory: 128M+64M; Support max 32GB TF card (Not included) <br>- Display: 1.5 inch TFT HD LCD; Resolution: 240*240 pixel <br>- Camera: 1.3M <br>- Battery: 450mAh Polymer battery <br>- Acceleration sensor: 3D Acceleration?? Step counting analysis?? Sedentary remind?? Sleep monitoring?? Anti lost?? Remote Camera. <br>- NFC: No need to search?? bluetooth pairing?? electronic business card. <br>- GSM / GPRS 850 / 900 / 1800 / 1900; Pls make sure a 2G GSM NETWORK. And your sim card is prepaid sim card. <br>- D