The thinnest, lightest, fastest iPhone. It is just 7.6 millimeters thin. iPhone 5 is 18 per cent thinner (7.6 mm), 20 per cent lighter (112 grams) than the iPhone 4S. The width of iPhone 5 is same like 4S and the height is slightly more than 4S. It has a bigger 4-inch Retina Display and the wireless connectivity is ultrafast . The phone also has a bigger battery, which will last for 10 hours on WiFi and 8 on 4G. The phone also has an 8-megapixel iSight camera, which can click panorama pictures. It will be available in two colours, black and white.
Blu-ray Disc is the name of the new optical disc format developed jointly by Blu-ray Disc Association(BDA) and a group of media manufacturers. The Blu-ray Disc can store more than 5 times of the normal DVDs. It can store 25GB on a single layer disc and 50 GB on a dual-layer disc. The Blu-ray Disc can store video of over 9 hours of high-definition (HD) video on a 50GB disc.If it is standard definition video(SD) it can store upto 23 hours video on a 50GB disc.Blu-ray uses Blue-violet laser whereas traditional DVD uses red laser to read and write.
The advantage in using Blu-ray Disc is HD video. In fact HD offers 5 times the amount of detail compared to SD format which means incredibly sharp pictures.