Adattatore USB ricevitore audio Bluetooth CSR4.0 trasmettitore compatibile con Win8/10 senza driver

Without disc, the default is square head. If you need a semi-round head, please note when ordering! With disc, add +0.6 yuan. Product Features: ★Transmission rate: 3Mbps transmission rate, providing high-speed file and audio data transfer. ★The CSR Harmony driver management software is easy to use, powerful, and supports multiple application program extensions for Microsoft OFFICE software. ★Ultra-low latency high-speed connection, intelligent sleep/wake-up for energy saving, 24-bit CRC verification to resist interference, adaptive frequency hopping to reduce crosstalk. ★Fully backward compatible with Bluetooth 2.0, Bluetooth 2.1, and Bluetooth 3.0 specifications. ★The USB2.0 interface is more universal, and its ultra-mini size makes it portable. Wireless Bluetooth adapter, earphone clip-on collar-mounted Bluetooth, click the image link below 3.5mm audio Bluetooth receiver is suitable for headphones, cars, and regular speakers. Click the image link below USB Bluetooth adapter, CSR4.0 transmitter, click the image link below Little Blue Hat USB Bluetooth Receiver, suitable for cars, computers, and speakers, click the link below Regarding product quality: Our customer base has been continuously growing and expanding.This also makes us more confident in ourselves.Each product undergoes a certain level of testing during the production process, and we assure our customers that we are always striving for perfection and doing our best to guarantee high quality. Regarding express delivery and logistics: We choose Yunda Express for express deliveries and SF Express for large items within the province. Product prices do not include shipping costs. For customers with large orders, we recommend using logistics with freight collect. Delivery within Guangdong province usually takes 1-2 days, outside the province 3-5 days, and in remote areas it may take an additional 1-2 days. Please be patient.For logistics, we choose "Debang Logistics, Jiaji Logistics, Aneng Logistics, Yuancheng Logistics, Shenghui Logistics, Wangda Logistics." For remote areas, we use "transit" logistics, which can generally deliver to all provinces nationwide. Compared to express delivery, it is slower, but the shipping cost is lower Regarding after-sales service: If you choose to cooperate with us for the long term, we will consider your interests. As long as there is no damage caused by human error, please pay attention to the product's fragile return label.Additionally, if there is a quality issue with the product itself from the date of purchase, we offer a seven-day exchange policy, except for customized products. The return shipping cost is paid once by each party, meaning the sender pays the shipping fee. The company refuses to accept any items sent with collect on delivery.If the return is due to the customer's own reasons, the shipping cost is borne by the customer Regarding ordering and shipping issues: After you have made the payment, in general, we will process your order within 24 hours.If there are special circumstances, our salesperson will contact you promptly. We hope your contact information remains online. Regarding order quantities: To facilitate your purchasing and sales, our company normally maintains a certain amount of inventory.However, if the order quantity is large, please be sure to contact us to arrange production to avoid delaying your delivery date. Regarding the issue of receiving the goods: Please do not rush to sign for the delivery upon receipt. Be sure to check whether the packaging is intact and verify whether the quantity of goods is correct. We will include a delivery note. If there is a shortage in quantity or the product style is incorrect, the product quality.. If you have any questions, please contact us promptly. We will handle it promptly.