Auzen i.Fuzen HP-1
Snap your iPhone 4 on-board for improved audio playback, longer battery life, and a luxurious protective case. Own the iPhone 4? You need the i.Fuzen HP1 from Auzentech.
Dual Audio. Backup Power. Hard Shell Protection.
The i.Fuzen HP1 serves three important functions that no iPhone 4 owner should be without. The Dual Headphone Amp boosts audio volume and quality. The Rechargable Battery nearly doubles your iPhone4 battery life, giving you the power to talk, surf, watch, and play for as long as you like. The case wraps your iPhone 4 in a hard shell for maximum protection and an enhanced look and feel.
Don't let your iPhone 4 leave home without it.