These wireless sports headphones feature an LED-illuminated neckband with three lighting modes for enhanced visibility and safety during nighttime activities. The neckband offers fast flash, slow flash, and constant light options controlled by a dedicated button. Equipped with advanced Bluetooth V4.1 technology and a CSR chip, the headphones deliver crystal clear sound quality for music and hands-free calls with echo cancellation. The ergonomic ear hooks are made from skin-friendly soft silicone with a frosted surface coating for secure, comfortable wear during extended use. The sweat-proof design makes these headphones ideal for running, biking, and other active pursuits. The built-in 120mAh lithium battery provides up to 6 hours of music playback or 8 hours of talk time with the LED off, and up to 90 hours of standby time. A USB charging cable is included for convenient recharging in approximately 3 hours. This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.