NO NEED OF DVR or HARD DISK. Just plug the camera with power supply and monitor the live view on your mobile phone & PC. All videos and images are saved in SD card. LED BULB WITH PANORAMIC CAMERA: Elegant & modern LED bulb with integrated 360 panoramic camera. Constant 360°surveillance captures everything without need of manual rotating. Best spy camera looks like a bulb. POWERFUL MOBILE APP : Full control of camera & LED lights through mobile application to enable the 3D view of your world on your fingertips. Switch ON/OFF & change LED light visibilty from mobile App. TWO-WAY AUDIO AND VIDEO RECORDING: With the built in speakers and microphones, you can conduct two-way communication. Supports up to 128GB Micro SD card to record video with sound.