1. Compatible with Bluetooth 3.0 Android 4.1 OS above
2. Support SIM card, band GSM 850/900/1800/1900 MHz
3. Support TF card / Micro SD card up to 32GB
4. Support with bluetooth call & call reminder & sleep monitor & pedometer & sedentary reminder & calendar & SMS & audio and video player & anti-loss function etc.
5. High quality, very durable