High quality earphones Cutting edge Bluetooth 4.1 Technology with advanced aptX sound provides class-leading wireless audio for experience crystal clear highs and lows and driving bass. Comfort and best fit Ergonomic design optimised for best comfort for physical activities such as running, jogging, driving, camping, hiking, gym exercise and many more outdoor sports. Enjoy music and phone calls for hours on end! Enjoy up to 10 hours of premium quality play time (full charge in around 1.5 hours) The built-in microphone let you get high quality, hands-free phone conversation with clear voice. Bluetooth 4.1 Drastically reduced power consumption by low pulsing method that keeps devices connected without the need of a continuous information stream. Waterproof earphones The PSYC Esprit provides up to IPX4 resistance of sweat and water resistant making it ideal for use in wet conditions.