Wireless Bluetooth Earphones, Bluetooth Headphones, Toullfly&reg; Stereo Bass Sports Earphones Earbuds, Lightweight Sweatproof In-Ear Headset with Mic for iPhone 6s for Cycling Running (Black) Talk/Music playtime:about 4-6 hours;Strong Wireless Signal: you can enjoy skip-free music in a 10-meter working distance High Quality Guarantee: Noise cancellation makes you enjoy a clear sound in noisy environment. Clear bass resonance, and superior sound isolation. Lightweight sweatproof comfortable in-ear for cycling running gym walking and other sports Get Your Comfort Fit -- This Bluetooth Headphone comes with ear tips and ear hooks which designed to be softer and stickier to your ears, comfortable to wear. Connect with 2 Bluetooth Devices Simultaneously: will never miss a phone when enjoying music. This is a great convenience for those who use two cell phones, without switch the headsets