... price & Good quality NameSilicone rubber amplifier,loud horn For Iphone 4GCertificateROHSMaterial100% siliconeEco-friendlyYes Use Phone case& GiftLogoCustom ... makeby100%siliconematerial, environmental,safe to human body2.provide for different designs,sizes,colors and logos.3.Precisely mold ... and ODM are highly welcome;functionIt can provide protection for the cell phone from water,dust ,scratch,bump ...