FeaturesStorage: 256GB MicroSD / Cloud storage (subscription required)Field of view: 128 degreesPIR sensor for accurate human motion detectionBuilt-in siren with two flashing lights2-way audio communication & colour night-visionIntroducing the EZVIZ BC1 Indoor / Outdoor Wire-Free Full HD Night-Vision Security Camera – This kit includes 3x BC1 cameras and 1x base station. The BC1 is a weatherproof indoor/outdoor standalone 100% wire-free, battery-powered security camera with 128 degrees viewing angle. Equipped with an impressive 12,900mAh rechargeable battery, the BC1 can last for up to a year on one full battery charge, offering you up to 365-days peace of mind with pairing to the base station included. Up to 6x BC1 cameras can be connected to the base station and additional BC1 cameras can be purchased separately.