Product Description Military level Bone Conduction Technology,fortable to wear. Charge for 2 hours, Up to 6hours Battery life. Reliable connectivity within 33 ft (10m). Waterproof IP54, allow makingpletely sweat and waterproof without hesitation of intense workouts and extreme weather. Their coil can be bent 360° without deformation, full of elasticity, flexibility, and skin-friendly. Wireless earphones, more stable while
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