FACTBOX: Features of Apple's iPhone

(Reuters) - Apple Inc. on Friday starts selling the iPhone, which combines a wireless phone with music and video-playing capabilities and Web browsing. The device is one of the most highly anticipated U.S. product launches of the year.

Here are some key facts about the iPhone.

* Its main feature is a 3.5-inch (8.9-cm) touch-sensitive screen with one physical button. Programs are accessed by touching icons, and text is entered with an on-screen keyboard.

* It uses AT&T Inc.'s GSM network for voice calls and its EDGE network for data transmission. AT&T has exclusive rights to the phone for at least two years.

* It costs either $500 or $600, depending on whether it has 4 gigabytes or 8 gigabytes of flash memory.

* AT&T is offering two-year service plans starting at nearly $60 a month for 450 minutes of talking time, unlimited data, and 200 text messages.

* It has Wi-Fi wireless technology for high-speed Internet access and Bluetooth for use with wireless accessories and other devices.

* It has a 2-megapixel camera.

* Apple says the battery delivers up to 8 hours of talk time, 6 hours of Internet use, 7 hours of video playback and 24 hours of audio playback.

* It measures 2.4 inches by 4.5 inches, and is less than 0.5 inches thick. It weighs 4.5 ounces.

* It will be sold through Apple's retail and online stores and at AT&T outlets. It goes on sale at 6 p.m. in each U.S. time zone.