Feature: 1. Convenience: Wireless bluetooth adapter allows you to enjoy lossless sound without having to carry your computer with you, via Bluetooth headset. 2. Support Multi Device Use: 5.3 Adapter can connect to Bluetooth sound, cell phone, keyboard, mouse, tablet, printer, etc. It can support up to 7 Bluetooth devices at the same time. 3. No Latency: Wireless bluetooth adapter responds quickly, allowing for stable and high speed signal transmission without latency lag. 4. Equipped With Bluetooth 5.3 Technology: Adapter is equipped with a high performance Bluetooth 5.3 chip and 2MB/S high bandwidth, with strong update capability compared to previous versions. 5. Strong Signal: Bluetooth adapter has strong wall penetration capability and can effectively transmit up to 30 meters in an interference free environment. Specification: Item Type: Bluetooth Adapter Material: ABS Metal Product Size: Approx. 2.5 x 1.5 x 0.5cm/0.98in x 0.59in x 0.20in Product Weight: Approx. 3g/0.10oz Features: Transmitting Receiver. Package List: 1 x Bluetooth Adapter Note: Manual measurement, please allow slight error