Unexpected 57mm ultra-large dynamic drivers and turbine style housing, let you feel the bass resonate deep in the chest Soft ear pads and breathable head beam, comfortable to wear Advanced Bluetooth 4.1 connection, 72MHz 16/32 bits high-speed processing Seamless connect two Bluetooth devices simultaneously DSP intelligent noise cancelation, bring excellent music and calling experience Built-in 11 Equalizer modes, press volume +/- at the same to switch Line in/out 2-in-1 interface, support input music via 3.5mm audio cable, or output music to another earphone Acoustic echo cancellation and noise reduction effectively reduce ambient noise while talking Incorporate 4 languages voice prompt (Chinese, English, French, Spanish) Large capacity built-in battery, long-endurance time, 40 hours of music time, 45 hours of talk time, 1600 hours of standby time Wide compatibility, applicable for iOS, Android and Windows phone systems Support both Bluetooth or non-Bluetooth devices Specifications: : Bluedio Model: HT Drivers: 57mm speaker x 2 Transducer type: dynamic Bluetooth version: V4.1 + EDR Operating distance: up to 10m Bluetooth profiles: A2DP, AVRCP, HSP, HFP Impedance: 16 Sensitivity: 118dB Frequency response: 20Hz-20kHz Distortion: 0.1%(THTD) Music playtime: up to 40 hours Talk time: up to 45 hours Standby time: up to 1600 hours Charging time: about 2 hours Operational temperature: -10 to 50C Size: 175 x 85 x 182mm Compatible with: Apple iPhone, iPod, iPad series Samsung HTC Blackberry Xiaomi etc. Bluetooth enabled smartphones Support non-Bluetooth devices via 3.5mm audio cable Package included: 1 x BLUEDIO HT Turbine 57mm Driver Bluetooth 4.1 Over-ear Headphone with Mic Line In/Out 1 x 3.5mm Audio Cable (about 150cm) 1 x Micro USB Cable (about 100cm) 1 x User Manual Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-DIMEANI official store