The NVS can be connected with all of VSTARCAM network camera through the W-Fi achieve 4 channel real-time video playback and recording; Support massive storage enjoy unlimited music HD home theater and share high quality picture; Support wireless connection watch & listen at anytime; Dual track stereo high fidelity sound; High quality capacitive screen real picutre enjoy home theater; Built-in Wi-Fi: 802.11.b/g/n; Free DDNS: no need for DDNS support dynamic IP; Local memory: support up to 2TB hard disk 24-hour recording; Monitor advantage: support PC computer multi-channel surveillance; Processor: A20 dual core 1.0GHz; RAM/ROM: 1GB DDR/4GB Flash Memory; Screen description: 7 inch capacitive touch screen multi-point touch; Resolution: 1280 x 800; Video format: depends on the connected camera; Input: 4-channel IP camera; Video surveillance: 720P / 4 channel real time recording; Entertainment multimedia: digital frame music/video play; Recording storage: local storage; Recording playback: single channel playback; Interface: Micro USB Micro SD (Support up to 32GB) USB 2.0 Hard disk interface (1 pcs 2.5 inch hard disk max.2TB SATA interface) Audio interface (3.5mm headphone jack).