AIYIBEN bluetooth earpiece for cell phone This product uses a noise-canceling CVC6.0 microphone that can reduce noise and improve the clarity of calls. As a result, the sound quality of the microphone tends to be better. 5.3 Bluetooth produces the highest fidelity sound for a wonderful treat for your ears and provides a fast, stable connection and low power consumption. The ergonomic Bluetooth Phone Earpiece in-ear earbud design ensures a comfortable music and calling experience without leaving your ears. With two optional earbuds, you can keep it perfectly in your ears, regardless of the shape of your ears. Connect to 2 Bluetooth-enabled devices at the same time and watch movies on your tablet without worrying about missing calls. First Connection: 1. Please fully charge the wireless single earbud before using it for the first time. 2. Press and hold the power button for 3 seconds to power on. 3. Use your phone's Bluetooth to search for "M9" and tap to complete the pairing. 4.M9 will automatically reconnect to your device after first pairing and use. Headset Specifications: Waterproof rating: IPX5 Working range: 10 meters Charging time: 2 hours Bluetooth version: V5.3 Play time: 6 hours Package includes: 1x Bluetooth headset 1 USB charging cable 1x User Manual