Tips: Pairing mode: Keep pressing the switch on/off Button until Blue light remains Bright,then you can search for I4 and connects with the headset Do you use your phone for music and making calls frequently? BluedioI4 Bluetooth stereo headset will help you get rid of it. Bluedio i4 aims to combine beautiful appearance with a luxury sleek outlook design and multifunction buttons to attract consumers. BluedioI4 supports A2DP AVRCP HSP profiles and music streaming. You should never miss the Bluedio I4. BluedioI4 Technical Specification: Bluetooth Version: 3.0 Operating Distance: 10m Headset weight: about 9.6g VOIP: Support Multipoint Technology: Yes Music Streaming: Yes Multi-function Button On/Off: Yes Standard Bluetooth Features: Yes Standby Time: 130 hrs Supported Profiles: A2DP AVRCP HSP Talk Time: 5 hrs Accessories In-ear Headset Core 1pc USB Cable 1pc User manual 1pc