... phone.5.Sip Communication Protocol.6.H. 264 video compression, high compression, image clarity.7.Small, lightweight, easy to carry. ... Clear video screen, dual streaming designUsing the improved high quality compression method (H.264), it requires low bandwidth and saves video ... insert SD card (supports large capacity 32GSD card) to achieve 24 hours recording. Video Format: D1, Half D1, CIf. Received ...