Dual-band WiFi with efficient antenna design and advanced roaming support Bluetooth for syncing headsets and mobile devices (contacts and call transferring) HD voice & dual MIC design with AEC and Noise Shield Technology Rechargeable 1500mAh battery, 7.5 hour talk time, 150-hour standby Accelerometer and configurable button for push-to-talk, panic and other related functions Micro USB port and 3.5mm headset jack 2 SIP accounts, 2 lines