BDQFEI(TM) CSR4.1 stereo Wireless bluetooth headphones mini Voice Control earbuds Ears hanging type headphone for left ear or right ear (Rose golden) USES professional 4.1 low power consumption Bluetooth chip, save 30% transmission power consumption and prolong 20% battery cycle life, selects high cost lithium-ion polymer battery, more durable environmental protection silicone ear cap, wearing comfortable, novel and fashionable appearance design, glamorous Intelligent voice control,just say Yes or no answer call or reject can complete, real voice prompt, broadcasts, telephone number, headset status reporting, noise reduction, digital signal processing (DSP) intelligence support for apple's IOS system, millet capacity display function, a key control, easy operation Smart yituo two, can connect two phones or bluetooth devices at the same time,It is more convenient to use Intelligent compatible connection, compatible with bluetooth phones, tablets, laptops, desktop computers, smart devices and all kinds of APP procedure