Bluetooth technical parameters:Product parameters1. Wireless transmission distance2. Binding capacity: 180 mah3. Frequency range: 20-20 kHz4. Sensitivity: 95DB5. Blocking: 32 ohms6. Speaker size: 32mm7. Loading time: 2 hours8. Continuous voice conversation time: 4-6 hours9. Bluetooth music playing time: 3-6 h (volume status 70%)10. Size: 22 * 6.5cmPackage List:Bluetooth headset * 1Manual * 1Charging cable * 1About Shipping: All items will be shipped within 3 business days after the payment is received. Most times you will receive them within 8-12 days then. The specific delivery time is depend on circumstances.Any questions, please feel free to contact usDuring the shopping process, if you have any questions, please feel free to consult us, we will reply you within 124843 hours, wish you a happy shoppingThanks for your cooperation and we"ll make you feel satisfied.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 specificationsWe 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