FunnyDay Popular 3D Holographic Display Pyramid Stand Projector for 3.5''~6.5'' Smart Cell Phone This product is the most popular holographic pyramid projector. just need to open the holographic video and put the projector on the phone's screen. 3D holographic image will appear. Suitable for the phones of 3.5-5.5 Note: The projector need to work with holographic video. We do not provide the source of the video. Please download the holographic video on the internet. Size: Approx. 6.8 x 6.8 x 5.5cm/2.68"x2.68"x2.17"(L*W*H) Quantity: 1 pc