wireless vedio doorbell remote distance>300m CE,FCC,RoHS pass digital ... night vision,video,sound 2.4G digital wireless color vedio doorbell Function Feature1) Transmission distance: 300m (free lane)2 ... )Battery: work 100h,standby 5hours talk time5)Ringtone: 12pcs doorbell chime selectable5) Size: 12.8cm*6.5cm*1.5cm6) Transmission ... screw, rechargeable battery,manual, power adapter wireless vedio doorbell