Overview:D5 Professional Business Mini Bluetooth Headset, Simple and Stylish, soft silicone material,Bluetooth V4.1 High Quality Sound Performance,small and Light-weight Design, Perfect for car driving, working out, Sport, Running, Gym Exercise or any other activity.Built in HD and Sensitivity microphone, ideal for you to make and receive calls while outside, in the car, or in the office conveniently.Telephone number automatic Report, single-click to answer or double-click to disconnect. Specification:Multifunction button Switch machine (long press 3 seconds to boot, 5 seconds to turn it off) Answer the phone or end a call (Tap once) Call-back (Double click multifunction button) In pairing state (long press until the indicator light flashing in red and blue alternately) Transfer calls with mobile phone (Tap for 1 second while in a call) USB charging 1-2 hours (Full charged) Standby time of 60 daysTalk time 32 hoursMusic time is 28 hoursBattery capacity 200mAhThe headset will has a good performance After a full charge The volumeThe volume increase/decrease (Each times a volume level of change will happen)The LED In charging (flashing red light when charging, turns blue after full charge) Lack of power(red light flashes 2 times, and a voice prompt) Applicable to: For Apple IOS iPhone 7/6/5/4/ iPad SeriesFor Android Phone For Samsung/Sony/Motorola/Nokia/LG Phone SeriesFor Huawei/Xiaomi/Lenovo/Meizu/Oneplus/HTC/Letv Phone SeriesFor Most of Devices with Bluetooth ... Packing List:1 x D5 Bluetooth Earphone Headset1 x Spare Ear cap1 x Earhook1 x USB cable1 x Vice Earphone1 x box