Brand New, Unopened Bluetooth Headset 5.0 Wireless Bluetooth Headset, High-Quality Single-Ear, Built-in Microphone, Bluetooth Earphone, Business, Comfortable Fit, Hands-Free Calling, and also a product with Japanese Technical Standards Compliance Mark / (Black) 【 Bluetooth 5.0 High-Quality Headset 】: The latest evolved Bluetooth headset v5.0 single-ear uses the world's most advanced CSR chip, ensuring the best signal quality and excellent sound quality. It can also reduce noise, allowing you to enjoy calls even in noisy environments, making it very useful. 【Dual-Ear Compatible, Rotatable】：Compatible with both ears, the ear hook is extendable and rotates 180 degrees, adjusting to the size of your ear, and can adapt to 99% of ears. The call microphone can also rotate 270 degrees, allowing you to adjust it to your preferred angle. Furthermore, the ear hook with a fit structure that allows for stable wearing is made of smooth paint and skin-friendly silicone rubber material, providing a soft wearing feel. 【Compatible Models】：Powerful Bluetooth V5.0 technology can display the battery level on iOS systems and transmit strong audio and fast, stable signals within a range of 20m. Strong compatibility, can connect two devices simultaneously, making it more convenient. Compatible with most Bluetooth-enabled devices such as iPhone, Android, Samsung, Huawei, and PCs. It can also be used in various situations such as driving, business, sports, commuting to work or school, etc. 【Usage Time】：Built-in 115mAh large-capacity battery, charging for about 1.5~2 hours, talk time about 6 hours, music playback 6 hours, standby time about 150 hours, communication distance about 20m (without obstacles). Thank you for viewing.