Using the latest CSR4.2+EDR Bluetooth-compatible technology, superior signal transmission, ultra-low power consumption, all Bluetooth-compatible devices, automatic answering function, switchable manual answering phone function, safe and fast, built-in high quality anti-interference microphone It can effectively realize hands-free answering and hang up calls. for High fidelity sound , support last song or next song function, volume addition and subtraction, playback pause, automatic callback and other functions, easy to operate. Product parameters: 1. Bluetooth-compatible version: V4.2+EDR 2. Standby: 120Hours 3. Transmission distance: 10M (transmission distance varies depending on environmental factors and mobile phone Bluetooth-compatible devices) 4. MIC distance: 1 meter 5. Lithium battery: 500mA About shipping 1.WORLDWIDE SHIPPING. (Except some countries and APO/FPO) 2.Orders processed timely after the payment verification. 3.We only ship to confirmed order addresses. Your order address MUST MATCH your Shipping address. 4.SERVICE TRANSIT for TIME is provided by the for carrier and excludes weekends and holidays. Transit times may vary, particularly during the holiday season. 5.If you have not received your shipment within 30 days from payment, please contact us. We will track the shipment and get back to you as soon as possible with a reply. Our goal is customer satisfaction About Dropshipping or Wholesale 1.If you want to make a dulk order, please feel free contact us for a wholesale prices. 2.If you want product customize,please contact us in advance,we will try our best to meed you need.