Bluetooth Headphones Headset Rymemo Wireless Earphones Auto Wire Retraction ( NO NEED CLICK BUTTON ) Metallic-feeling Surface Stereo Music Earbuds Sports Earpiece Vibration Neckband Style,Blue Rymemo Bluetooth Headphones- JUST FOR SPORT: Comfortably/Dynamic/HiFi Sudden Wire Retract: Bluetooth headphones automatically retract wire, no need click button Random Length Wire: Drag out the retractable wire to the length freely from 0.1 to 25 CM Amazing HI-FI Sound: Excellent bass and bright voice deliver perfect listening feast in sport Metallic Craft: Learned from Apple phone aluminum surface art, its surface is made of high-grade and wear-resisting light plastic that looks so exquisite