Check the listing for details. Mini 30 Pin Bluetooth 5.1 Audio Receiver Bluetooth Wireless Adapter Receiver. Color: as shown, Condition: New. Listed at 9.46 USD. dimensions: approx. 4.4cm(1.73in) x 3.5cm(1.38in) x 0.8cm(0.31in) equipment identification: i-wave support file: bluetooth v5.1 a2dp v1.2 connector: equipment with for 30-pin dock transmission distance: up to 33 feet (10meters) away net weight: 10g package includes:1pc bluetooth music receiver Notes: 1.Only analog speakers are supported, digital speakers are not supported. If you can't use this product after receiving the goods, it means that this adapter is not compatible with your speaker. 2.This item is Not Compatible with for Car Stereo System. 3.This item is Not Compatible with for Digital Speakers. Methods used: Step 1: Bluetooth music receiver connects directly to ipod speakers 30-pin dock; Step 2: Enable the bluetooth function for the devices such as For Pad,For Bluetooth PC, Cell Phone, search Bluetooth devices to find I-Wave and connect it; Step 3: After successful paring, we can play music by speakers without wires