... 1. nightvision, doorbell, two way talking 2. 3.5 inch monitor 3. photo shooting 2.4Ghz wireless video doorbell, video door phone, peephole ... monitoring all the while;(5) Hands-free intercom, Unlocked by wireless control;(6) 16 chord melodies for option, melody volume ... hours; Continues working: 10 hoursCharging time:2~3hours (above 5 hours for the first time)Adapter Input:AC100~ 240V, 50/60HzAdapter ...