Starting at 1 p.m. EST today and running through August 5, 2009, you can get a free spare battery, car kit, and leather pouch with your purchase of the $600 Viliv S5 Premium Mobile Internet Device (MID) on Dynamism.com.

MIDs can be described as devices that are not really smartphones or netbooks but something in-between. The S5 features a 4.8-inch WSVGA display, a 60GB hard drive, an on-screen keyboard, and an Intel Atom Silverthorne 1.33-GHz CPU.

Back in April, Gizmodo tested the S5 and found that it's 1.5 pounds lighter than most netbooks (at 14.72 ounces), with a very responsive touch screen. Rated with a six-hour battery life, Gizmodo received four hours and two minutes when tested with nonstop WMV playback. It runs on Windows XP.

Shipments of the S5 are expected August 5, August 14, and August 24, and will be fulfilled based on order date.