V4.0 Bluetooth Headset Stereo Wireless Bluetooth Earpiece Small Invisible in Ear Earphones Microphone Compatible with Samsung Galaxy Note 9 8 5 S5 S6 S7 Edge S8 S9 Plus LG G3 G4 G5 G6 Pink SMALL INVISIBLE AND COMFORTABLE: Small and a light with ergonomic design. Discreetly listen to music, audio-books or sporting events in the office, meeting, gym, home. BUILT-IN MICROPHONE AND HD VOICE: Built-in DSP audio processing system, Sensitivity microphone works great for hands-free calling. Digital noise-cancelling provides high quality clear and natural voice. FAST CONNECTION: This bluetooth headset could pair with 2 smart phones at the same time. Based on bluetooth V4.0 and high-end chip from CSR, it can fast and easily pair to your smart-phone and the connection distance is up to 10 meters. LONG TALKING TIME: Up to 4-6 hours of continuous talk time, Up to 3.5 hours of music time. Built-in 50mAh polymer battery. Only need to charging 2 hours. UNIVERSAL COMPATIBLE: Compatible with most Bluetooth version devices, and Notebook pc as well. Ideal for in-car calling or working use.