DB2 Pro Battery-powered Video Doorbell Kit with features 2K⁺ Resolution, Smart Human Motion Detection, 176° Ultra-Wide Field of View, 5,200 mAh Rechargeable Lithium Battery, Wi-Fi Chime Included (Supports microSD card up to 256 GB¹), Multiple Ringtones Available, No-Filming Privacy Zones, Voice Changer For Privacy Protection, IR Night Vision (Up to 5 m / 16 ft), Anti-Tamper Alarm, Weatherproof Design, H.265 Video Technology.