Description: Open wireless headphones, high-fidelity surrounding sound, clarity without limiting external world sounds. The wireless Earpiece is designed according to ergonomics. Wear the Earpiece on right ear for better call clarity. 5.2 open-ear single headphone pairing with all enabled devices, including smart watches, computers ,tablet, for iOS; for Android, smart phones and so on. This is a mono earbud, 2 earbuds cannot pair together. Hi-Fi sound, dynamic deep bass, built-in mic, hands-free phone calls. Rechargeable long-lasting battery, lower power consumption, provide you to enjoy continuous music. Comfortable, lightweight and flexible design, No wires tangling, and it's easy to storage to your sports armband or package bag. Sweatproof and waterproof, suitable for running, cycling, fitness, hiking, rock climbing, jogging, biking, driving and Gym etc. With outdoor noises reduced, the microphone sound would be clearer as making phone calls. You can enjoy hands-free phone calls with high sound quality even walking on the street. Super convenient for driving, working, and exercise. Specification: Size: 4.4x4.3x2.4cm Material: Plastic Color: Black/White(Optional) Type: Earphone Usage: Hanging Ear Type Charging method: USB Charging Size Chart: 4.4x4.3x2.4cm/1.73x1.69x0.94inch Package Includes: *Only 1pc Earphone(Single Side)(4 Pack) Note: 1. Please allow slightly error due to manual measurement. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. 3. Wish you a wonderful on-line shopping!