Bluetooth Headset,Esonstyle Bluetooth V4.0 Wireless Neckband Headphones Noise Reduction Earbuds with Microphone and Magnet Holders for iPhone iPad iPod Samsung Android Smart Phones Advanced Technology: With bluetooth 4.0 and apt-X tech, the headphones ensure high-fidelity stereo music and clear speech within 10 meters. Invisible nano-coating technology protect earbuds against sweat during running and workouts. Easy Access: The simple user interface on one of the earphones allows you adjust the volume, play/pause, select songs and answer/hang up calls completely effortlessly. Powerful Rechargeable Battery:Built-in polymer lithium battery, up to 180 hours of stand-by,up to 7 hours of talk time, up to 5 hours of calculating conversation time and 2 hours charging time. Sport Design:Featuring an unique neck-strap and Ultra light weight designed Specially for easy carrying for all day comfort. The flexible, bendable, neckband style ensures a 100% comfortable fit. Compatible with iPhone 6/6s,6 Plus/6s plus, 5 5c 5s 4s,iPad Air, Samsung Galaxy S6,S5,S4,S3 Note 4 3, HTC M9 M8 M7, LG Flex 2 G3 G2, and Other Bluetooth Android IOS Smart Cell phones/Devices