iYOU Bluetooth Connection: Bluetooth V5.0 ensures strong signal and wireless connection range is 10 meters (no obstacle).Hands-free with Mic: High-quality Microphone grasps the detail of voice, ideal for in-car calling or working use.Long Battery Life: Built-in Support Wireless / Memory Card lasts up to 5 hours of working time on one full charge.   Easy Operation: Easily control playing / pausing, answering / rejecting / ending a call and redialing the last number.Comfortable to Wear: lightweight, in-ear design and ultra-soft earcap provide you long time wearing comfort.BLUETOOTH HEADSETBT Version:  V5.0Talk Range: 10mBattery Capacity: 150mAh(each earbud)Standby Time: Up To 35 Hours Talk Time: Up To 5 HoursMusic Play Time: Up To 2.5 HoursSupport Wireless / Memory CardCustomized high fidelity speakers, excellent stereo and bass sound effect, let you enjoy high quality music with affordable price ! Smart touch control, easy to operate.