Parasom Bluetooth Headphones, A10 Magnetic Portable Wireless Sports in-Ear Stereo Sweatproof Earphones with Mic, Secure Fit for Sports/Workouts (Black/Grey) [Magnetic Feature] The earplug can be magnetically attached to each other back-to-back, forming a loop around your neck. You will never worry about the earbuds to be lost for during workout and sports. [Perfect for Workouts] Comfortable in-ear design, snug and secure, make sure the headset stay put and your music stays smooth when you are running, cycling, exercising and doing other activities. [Noise Isolation] CVC noise Isolation technology reduces outside noises, enable clearer microphone sound. [Bluetooth 4.1 Technology] Faster and more efficient than ever before, Bluetooth 4.1 improves connection stability, faster pairing, lower latency, and lower power consumption from connected devices. [Long-Lasting Usage & Lightweight Design] Up to 6.5 hours talk time and 5 hours music time, 240 hours standby time, 2 hours charging time. Get continuous streaming throughout hiking, cycling, jogging, etc.