spy cameras - 720P HD Mouse Spy Camera DVR Buil In 4GB With U Disk Function - Feature Outlook small size and elegant design 1280 x 720 HD Video Resolution Simple operation,can be used as real Mouse U Disk function Specification: Video format :AVI Resolution:1280*720 Memory:built-in 4GB(8GB is optional) Operate System: Windows ME/ 2000/ XP/ Mac OS 9.2.2 or above (windows98 is excepted) Battery type: Li-battery, 450mAH Standard Work time: about 60 minutes Charge Voltage:DC-5V Dimension (WxDxH) 130x97x40mm Net weight: 151g Package Globle Free Shipping direct from manufacture Learn More