The sidekick LX, otherwise known as Sidekick 4, by Sharp is slimmer and weighs less than the Sidekick 3, has a 3-inch WQVGA display that is thinner and mounted on an improved swivel joint. The sidekick lx lasted an impressive 10 hours and 4 minutes in a music playback test. It DoubleTalk Charger combines an auto (car) charger and an AC (travel) charger in one convenient device. It also boasts an improved proprietary browser from Danger, which takes advantage of the wider and higher-resolution screen, and has QVGA display, 1.3MP camera, and a microSD card slot (128MB included) that can support cards as large as 4GB. The sidekick lx features the same iconic swivel screen as previous Sidekicks, but the overall device is slimmer than previous models. It is like a messaging limousine, with a big, luxurious keyboard and huge, bright screen that makes e-mails and IMs fun to write and easy to read.