ICONNTECHS IT Bluetooth Earbuds, Latest CSR 4.1 Wireless Technology, Stereo Sound, Built-in Microphone, and IPX4 Water-Resistant Headphones for Active Lifestyles BLUETOOTH CSR 4.1: Our pair of earbuds harnesses the power of Bluetooth CSR 4.1 that allows you to do a lot more than just listen. Its designed for grab-and-go active lifestyles so you can engage in extreme sports, outdoor adventures, or any health and fitness program you want. Pair it with your favorite device and enjoy instant connectivity and signal stability even up to 33 feet away. SNUG-IN-YOUR-EAR STEREO SOUND: Our soft silicone earbuds come in three sizes for that perfect, in-the-canal fit. Theyre held by flexible around-the-ear hooks and a 55cm cable that hangs on your nape to ensure that they seal in continuous, crisp and clear stereo sound, while staying in place even during strenuous exercise. HANDS-FREE CALLING WITH BUILT-IN MICROPHONE AND NOISE CANCELLATION: Be amazed with how our bluetooth earbuds provide you with complete freedom of movement while youre on a call. The built-in microphone cancels out noise and allows you to walk, drive, or work while leaving your hands free to multi-task. IPX4 WATER-RESISTANCE: Whether youre sweating it out in the gym, running in the rain, or cooling off in the shower, ICONNTECHS IT earbuds deliver excellent sound quality. Thats because the circuit board in each earbud is treated with a layer of nano-coating that protects it from splashes of water from any direction for up to five minutes. LONG-LASTING POLYMER 85MAh BATTERY: When you want to enjoy the sheer pleasure of watching your favorite movies, talking on the phone, learning from a podcast, or getting your adrenaline going during an adventure -- you can always depend on uninterrupted, clear sound delivered by our 85MAh battery. It provides up to seven hours of music play, eight hours of talk time, and 240 hours of standby time.