Color Indoor phone Video talk-back, unlocking by remote control, monitoring ... -free indoor phone 5.6",7"TFT kit:Shell KWith the function of video talk-back, unlocking by remote control ... Display, Easy viewingHands-free calls, safe, easy communication.Video Room-station has unique shape, elegant and graceful.Receive ... 15,625±400HZ V: 47±3HZ Display color TFT: 5.6/7inchMaterial of frameABS Video monitor