Exceptional audio clarity and balance with an extended frequency range (15 Hz - 30,000 Hz), 55 Ohm impedance 42 mm large-aperture drivers with Neodymium magnets and copper-clad aluminum wire voice coils 110° swiveling earcups for single-ear monitoring anytime; self-adjustable and flexible headband delivers a fatigue-free listening experience that can last for hours, perfect for mastering and mixing

✔AMAZING Music Playtime/Talk-time -- This bluetooth earbuds is built in 60mAh rechargeable lithium polymer battery that can be used up to 6 hours talking time, 4-5 hours music time, 100 hours standby time on only 45 minutues of Charging. Instantly connected to your smartphone or tablet from up to 33 feet away. ✔Faster and Stable Bluetooth connection -- Our this Bluetooth version has been upgrated 4.1, Instantly connected to your smartphone or tablet from up to 33 feet away. Never lose signal when you when calling, listening music,.ensures maximum signal quality. It will come back very faster to original phone paired automatically even though over 33 feet or more obstacles.Besides, At the same time can be paired with 2 mobile phones. ✔ Ergonomic designed and comfortable to wear -- The wireless headphone is designed Ultra Min with 3 different sizes of ear tips to fit ears of all sizes. Unbelievable Lightweight about 0.1oz. Snug and secure, much more convenient for Driving, Cycling, Running, Jogging, Hiking, Camping, Gym Exercise, Business and Relaxation