Easy to use by connecting directly via 30-pin dock to convert a standard sound box into a Bluetooth-enabled speaker. Supports digital devices with Bluetooth connectivity, including smartphones, tablets, and PCs. Complies with Bluetooth V2.0 and supports A2DP V1.2. Plug and play design; powered through the 30-pin dock connection. Type: Bluetooth Music Receiver Bluetooth Standard: V2.1 or above Transmission Distance: Up to 10 meters Transmission Speed: 30 Mbps Frequency: 2.4 GHz Size: 4.35 cm x 3.55 cm x 0.7 cm / 1.71 in x 1.40 in x 0.28 in Item Type: Adapter Color: Black Material: Plastic Package Contents: 1 x Bluetooth Music Receiver (other accessories not included) Note: Light reflection and differences in display screens may cause slight variations in color between the product image and the actual item. Measurement allows an error of +/- 1-3 cm.