3-Month Long Battery LifeBuilt-in rechargeable lithium battery with low power consumption, delivering up to 3 months of use on a single charge varies by usage.No-Drill 3M Adhesive InstallationIndustrial-grade 3M adhesive allows one-second mounting without drilling, ensuring a secure hold without damaging walls.Remote Video Call & Two-Way AudioReceive instant app alerts when the bell rings; answer live video calls and talk to visitors/couriers from anywhere via your smartphone.All-in-One Doorbell & Security MonitorFunctions as both a doorbell and a surveillance camera, letting you check your door’s status anytime, anywhere.Complete Kit & Easy SetupIncludes a doorbell camera and wireless indoor receiver; simple setup with no complex wiring, ideal for homes, rentals, and solo dwellers.