Ergonomic earbuds for a natural fit. Lightweight and slim neckband style for wearing stability. Bluetooth version 4.1 and HSP/HFP/A2DP/AVRCP Support. Rechargeable battery offers up to 7 hours of playtime. Sleek metallic gloss accents. Never miss a call with vibration mode. Remote control for hands free calls and music. High-power drivers deliver clear sound.