... green bule gray orangeFeatures: It can be used with the iPhone / iPod directly Frequency: 20Hz- 20000HzImpedance: < 10k OhmsSensitivity: ... available: Payment Information T/T, Western Union, MoneyGram, Alipay and Paypal. Delivery methods & time: By DHL / UPS / EMS / FEDEX ... receipt Promotion Mobile Phone Earphone for iPhone, in ear Headphone Earphone for iPhone 3G 3GS 4G, ipod touch, paypal, OEM