Creative Bluetooth Wireless Stereo Sport Headset Handsfree Headphone For Smartphonesdetails:Bluetooth technology: CSR8610 Bluetooth version: V4.1 Design: Hands free/Headset Frequency: 2.402-2.480GHZ Multi connection: 1 drives 2 devices Operation range: 10m Input voltage: DC5VCharging time: 2Hours Talking time: 6-8Hours Voice control: Announce who's calling、allows you say?＜yes?＼to answer/?＜no?＼to reject. Fit design: Ear-Hook、 fit for both ears Material: ABS+electronic componentsColor: BlackSize: about 9*8*2cmPackage Content:1x Bluetooth Headset1x USB charging cable1x earplug1x dustproof sponge1x User manual (English/Chinese)