NT Universal Wireless Bluetooth Handsfree Headset Bluetooth Earphone for Iphone Lg Shape:Neck hanging type design, make your hands free, and you can be comfortable without any burden. It is made up of top rubber materials and can be folded at random, characterized by its compactness and portability. The color is classy and fashion. You can choose the white and the black at random. Personalized function:It can provide Hi-Fi stereo effect, external speakers(Only the right side). Gently press, you can pick up the phone, enjoy high quality music. You can also adjust the sound size; choose the upper and lower playlist. Battery capacity: There is long standby time 300 hours. You can make a 15-hour call by it. And you can also listen to music about 10 hours by it continuously. It takes about 2 hours to charge the battery full. Tone quality: Professional audio tone pitch, is the best choice to enjoy the feast of the hearing. Personalized Bluetooth:Bluetooth version upgrades to 4.0. After connecting multiple devices, you can call through the mobile phone, and you can also listen to music through the media player. Barrier free transmission distance up to 10 meters.