This General Electric GE Super Cube Pack includes three flash bulbs that are compatible with universal brands. The light color is blue and the bulbs come with Edison screw fittings. The intended audience is adults and the book title is Minolta Auto Meter IIIf Instruction Manual. The publisher is Minolta and the book series is Meter. The model is General Electric GE Super Cube and the author is Minolta. The Hasselglad B57 Carl Zeiss Proxar F: 0.5m and the Hasselglad B50 Proxar f: 1m Black Filter are also included. This flash cube is perfect for photography enthusiasts and professionals alike.