Dual-band Wifi with efficient antenna design and advanced roaming support Bluetooth for syncing headsets and mobile devices(contact and call transferring) HD voice & dual MIC design with AEC and Noise Shield Technology Rechargeable 1500 mAh battery, 7.5 hour talk time, 150-hour standby Built-in accelerometer, panic button, push-to-talk Micro USB port and 3.5 mm headset jack 2 SIP accounts, 2 lines Support custom Android apps that fit the phone's screen/keys.