Silicone rubber Speaker Stand Holder for Iphone
1.material:silicone
2.Size: 11.0*4.0*4.0 cm
3.best speaker for iphone

Instructions:   
1)Slip the horn speaker onto your iPhone for lo-fi amplification simplicity. Using old-fashioned acoustical science, the Stand adds 13 decibels to the sound (without asking for an erg of battery power) as it is borne out the horn. You can also use it to prop your iPhone into a vertical or horizontal viewing position. For original iPhone, iPhone 3G/3GS & iPhone 4.   
   
2)No external power needed, increasing 13 decibels of volume   
Holds iPhone vertically and horizontally, functions well in hand-free mode   
Additional opening reserved for charger   
Washable, dirt and scratch resistant   speaker for iphone