Description: For Music: This bluetooth-compatible single ear headphone features a good sound quality that makes it a good choice for listening to music. Fits Occasions: The bluetooth-compatible hands-free earphone is suitable for many occasions to wear, such as walking, running, hiking, working, and more. Dual Connection: The wireless in-ear headset allows you to connect with 2 phone at the same time, which is useful. Noise Reduction: The noise cancelling headphone features a built-in audio processing system that can help to eliminate the noise to ensure a good and clear communication. Portable: The earphone is designed to be in-ear type, which is mini, lightweight and comfortable to use. Specification: Headphone Type: Both left and right ears can be used. Bluetooth-compatible: V5.0 + EDR. Supporting Agreement: HEP/HSP/A2D/AVRCP. Transmission Range: More than 10 meters. Battery Type: 55mA Rechargeable Battery.(Built-in) Charging Time: 1h-2h. Working Time: Music 4-6 hours (The Volume will affect the time). Standby Time: 100-150 hours. Frequency Range: 2.40-2.48GHz. Distortion Factor: ≤1%. Frequency Response: 20Hz-20KHz. Wearing Styles: In-ear Headphones. Note: There might be a few color distortions due to different computer resolutions. There might be a slight error due to different hand measurements. Package Includes: 1 Piece Single Bluetooth-compatible Earphone(with 1 Piece USB Charging Cable, 1 Piece Manual).