Key Features: 1) Video Resolution: 720 x 480 ,Video Format: AVI ,Video Compression Format:M-JPEG ,Video Frame Rate: 25/30fps ,Picture Format: JPG ,Picture Resolution: 1280x960 2) Real-time AV Recording ,Microphone Built-in ,Sound Recording ,Snapshot,Minimum Illumination:20 Lux ,USB Port:Mini USB 3) Rechargeable Lithium Polymer Battery Built-in ,40min Operating Battery Life Time ,Charge Voltage: DC 5V ,Battery Capacity:200mAh 4) It will take up to 2 hours to obtain a full charge 5) Support 16GB Micro SD Card in Max 6) Operating Temperature:0-40 ,Operating Humility:15-85%RH 7) Product Size: 60x22x10mm ,Product Weight: 17g Spy Camera : Real-time Audio and Video Recording ,Microphone Built-in, Photo taking function,Sound Recording, Support 16GB Micro SD Card in Max ,This fully functional Spy Button Camera is a masterpiece of engineering, worthy of any special agent. Small Camera : This camera has super mini size 60x22x10mm .This is one of the coolest audio recorders ever!It is a lightweight, smooth electronic gadget. You have total control over all recording without anyone even knowing you have a camera. Video Camera : The camera will save video files automatically every 10 minutes. Video format: avi; Video resolution: 720 x 480 Audio Camera : This camera support audio recording alone, so you can use it as a voice recorder. Battery Operated : Rechargeable Battery Built-in which can make a continuous video about 40 minutes if it is fully charged. It will take up to 2 hours to obtain a full charge.