Bilateral stereo
<br />Support bluetooth 4.1 version
<br />answer the phone
<br />Compatible system: IOS,android and Microsoft
<br />Use diameter of 57 mm speakers,clear of the sound quanlity
<br />HT also incorporate 4 languages voice prompt(Chinese, English, French, Spanish), to communicate with you in your language.
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<br />SKYBOX F3 satellite receiver with Full 1080P HD,Weather Forecast Original 2012 New version 
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<br />Drivers: 57mm speaker X 2
<br />Transducer type: dynamic
<br />Bluetooth version: V4.1
<br />Frequency range: 2.4GHz-2.48GHz
<br />Operating distance: up to 10m (free space)
<br />Bluetooth profiles: A2DP,AVRCP,HSP,HFP
<br />Impedance: 16¦¸
<br />Frequency response: 20Hz-20kHz
<br />Sensitivity: 110dB
<br />Distortion:<0.1%(TT2D)
<br />Music playtime: up to 40 hours
<br />Talk time: up to 45 hours
<br />Standby time: up to 1625 hours
<br />Charging time: about 2 hours
<br />Operational temperature: -10 to 50¡ãC
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<br />Package contents: 
<br />1 x Earphone
<br />1 x Audio Cable
<br />1 x USB Cable