Technical Specifications: 1.Sensor:300k pixes CMOS active digital image sensor. 2.Zoom:3X digital zoom. 3.Doorbell:doorbell function32 type's ringtone for choosing. 4.Micro SD card socket:support Max 32GB. 5.Don't Disturb:The doorbell won't ring if choose this function is enable. 6.Infrared:4pcs IR LED for night visionLED will turn on automatically under poor light. 7.Photo taking:Automatically taking and saving photos on Micro SD card when victor press doorbell button. 8.Video Recording:Press Video buttonthe device will record video. Repeat press Video button ti will stop the video recording. 9.Review:Press review button to review video or photos on the device. 10.Language:EnglishFrancoisEspanolaItalian ArabicTurkishRussiaSimple Chinese8 languages. 11.Power:4pcs AAA batteries. 12.Date and time:Date and time will make on the photos or video if you choose such function. 13.Low voltage:Power icon will twinkle when low battery. 14.Barrel diameter:14-35mm. 15.Door thickness:39-100mm. 16.Product size:120*95*14mm.