Mini Smallest Invisible 4.1 Stereo Wireless Bluetooth Headphones Headset Earphones Earbuds with Mic Support Hands-free Calling For iPhone Samsung Sony HTC LG Blackberry and Most Smartphones-Black Simple and Stylish:Mini invisible Newest bluetooth headset with lightweight and compact portable design. Built in HD and Sensitivity microphone,Handing Free for in-car calling or working use.Perfect for Stealth Listening or watching at work.Suppot A2DP akes you can enjoy clear and natural sound when calling It can be connected with two smartphone at the same time.The wireless range up to 10 meters on open air.The headser will be connect automatically with a phone paired previously.With Listening to music,calling,voice prompt functions. 1-2 Hours Charger : Up to 4-6 hours of continuous talk time, Up to 3.5 hours of music time.Built-in 50mAh polymer battery. Attentions Pls: Only include one Right earbud.