The World's Smallest Color Pinhole Camera built-in the button for hidden AV recording (Audio and Video Recording). No external power needed, just connect it directly with the MP4 player to hidden recording so you will not miss any action. Specially designed for Law enforcement agencies for their hidden investigation. This amazing device is ideal for covert or spy operations. Smallest size of audio video record only 90X60X18.2mm Smallest Covert Pinhole Camera built with button Connect Directly to MP4 player / Recorder for hidden recording Great for surveillance or FUN Great for Law enforcement agencies No Installation just plug and play Mp4 AV Recorder original momey flash have 512MB Extended SD/MMC card to up 2GB Built-in microphone the Button Camera Photo-image sensor: 1/3 CMOS COLOR Low Illumination: 2.0lux Horizontal Resolution: 380TV Lines S/N ratio: Min.48dB Video output: 1.0-/75ohms Backlight Opensation: AUTO Operating Temp: -10/+50 Power Supply: DC 5V Lens: 3.6 mm Supports multi-language display, supports WMA/WAV/ADPCM/PCM audio format Standard USB2.0 interface ,with built-in SD/MMC card slot, 256MB original memory flash inside Support folder management function and view function Supports ASF format, ADPCM stereo sound ,or convert to ASF format by transfer tools Bowse of photograph format is: JPEG format Setting up function: setup time / calendar, language, game, storage/check memory, game/auto power off 2.5" TFT OLED 260K color 16k, pixels support: TV OUT /IN Build -in MIC / speaker; Built-in 2300 mah lithium battery Recording sound source: MIC/LINE-IN Video form: ASF shade is broadcast : 6 hours Picture browsing: support EXIF2.1 Power Supply: built-in 3.7V lithium battery Playing time: 8 hours Dimensions: 90X60X18.2mm Accessories Button Shape Camera with audio video recording 10 extra matching buttons Super Mini pocket Audio Video Recorder (Mp4 player) Universal Charger Ear phone AV Cable USB cable Driver Disk for under win 98 SE ( XP do not need driver) Box User manual