— Capacity: 16 gigabyte model for $199, 32 gigabytes for $299 and 64 gigabytes for $399

— Size: height: 4.5 inches; width: 2.31 inches; depth: 0.37 inch (the same as the iPhone 4)

— Weight: 4.9 ounces

— Display: retina display, 3.5-inch (diagonal) widescreen multi-touch display

— 8-megapixel camera

— Video recording: high-definition (1080p — comparable to the resolution of a 40-inch flat panel TV) up to 30 frames per second with audio

— Battery: talk time is up to 8 hours on 3G, up to 14 hours on 2G. Internet works for up to p to 6 hours on 3G, and up to 9 hours on Wi-Fi, one hour shorter than the iPhone 4. Up to 10 hours of video playback.

— Dual-core A5 processor (which is twice as fast, and renders graphics 7 times faster than the previous model’s A4 processor)

— Video calling: Facetime

— Wireless carriers: AT&T, Verizon Wireless and Sprint Nextel

—Release date: October 14, 2011