Ennio 3.5" TFT Color Display Wireless Video Intercom Doorbell Door Phone Intercom System 2.4GHz launch frequency, Approx 30 meters barrier free remote control distance With micro-processing technology, auto-remote control, excellent performance and high reliability. 3.5" TFT color display. Time shown on the indoor monitor. Rechargeable lithium battery through mini use charger. 0.3Mega pixel camera. Monitor can take/save/view more than 100 photos automatically. Clear night-viewing, 24 hours monitoring, calling, speaking and unlocking remote controlling etc.