iPhone specifications...

Care of MacRumors, iPhone specs:

• System requirements
- Mac or PC
- iTunes 7
- Internet access is required, and a broadband connection is recommended
- Mac: Mac with a USB 2.0 port, Mac OS X 10.4.8 or later
- PC: Windows PC with a USB 2.0 port and Windows XP Home or Professional (Service Pack 2)
• External Controls
- Volume Up / Down
- Ringer / Silent
- Power / Lock
- Sleep / Wake
- Menu Button
• Dimensions
- 4.5 x 2.4 x 0.46 inches / 115 x 61 x 11.6mm
• Weight 4.8 ounces / 125 grams
• Input Method - Multi-touch
• Operating System - OS X
• Screen size - 3.5 inches
• Screen resolution - 320 x 480 at 160 ppi
• Storage - 4GB or 8GB
• GSM - Quad-band (MHz: 850, 900, 1800, 1900)
• Wireless data
- Wi-Fi (802.11b/g) + EDGE + Bluetooth 2.0
• Camera - 2.0 megapixels
• Battery
- Lithium
- Up to 5 hours - Talk / Video / Browsing
- Up to 16 hours - Audio playback
(Battery life varies by use)
• Connectors and other input & output
- 30 pin iPod connector
- 3.5mm jack includes audio and mic support
- SIM tray
- Built-in speaker
- Built-in microphone

Interesting that the 3.5mm jack is a 4-pole audio in and out? That could be useful