Now there are so many types of Spy cameras in the market. Pen spy camera and Sun glass Spy camera are the usual.

Pen Camera Pen DVR PenCam Pen Camcorder

Pen Spy Camera is Spy Hidden Camera in a pen cool Spy Gadgets. A Real Professional Pen DVR Camera for the professional investigators. With Date and time stamping for the evidence in the court . Built in 2-4GB memory gives a 16 hours audio video recording in AVI format which is acceptable for the evidence in Court or in Police and Army Departments.

Sunglasses Camera Smallest spy camera SpyCam 

Sunglasses Camcorder is the newest and most advanced spy camera with built in Video Recorder in the world. Unlike other device of this type, This sunglasses records everything you see and hear, without connecting to MP4 or other Recording source.