Product Name: Bluetooth-compatible Headset Type: Headphone; Transmission distance: 10m; Battery capacity: 400mAh; Sensitivity: 105±3db; Horn diameter: 40mm; Play time: about 10h; Standby time: about 120h; Charging time: about 2h; Built-in Microphone: Yes; TF card: support; Charging port: USB; Song switching: support (shortcut); Volume adjustment: support (long press the function key); Answer the call/hang up the call: support (short press); Audio I/O interface: support; Packing list:1 x Bluetooth-compatible Headset1 x Charging Cable1 x Instructions1 x Packing Box Note:1. Due to manual measurement, please allow 1-3cm error. Make sure you don"t mind before bidding.2. Due to the difference of different monitors, the picture may not reflect the actual color of the product. Thanks. Our products are made with the highest quality materials and are designed to provide you with the best possible user experience. We strive to ship out all orders within three days of purchase, and the estimated delivery time is 8-15 days. When shopping, please pay attention to the size and dimensions of the product to ensure that it meets your needs. In the title and , we have provided detailed information about the product, including its features and specifications. We want you to be completely satisfied with your purchase, so if you have any questions or concerns, please don't hesitate to contact us. We are here to help and will do our best to assist you. Thank you for choosing our product. We hope you enjoy it