Features: Easy to use by connecting directly 30-pin dock to change the common sound-box to Bluetooth sound-box Support digital products using Bluetooth ,such as For iPad,For Bluetooth cell phone, Bluetooth PC. Complies with Bluetooth 2.0, Support A2DP v1.2 Powered: via target device ( docking station) LED: One LED for paring and charging status Transmission distance: up to 10 meters(No obstructions) Simply insert this bluetooth audio receiver to your 30Pin male input on your speakers, pair it to your Bluetooth enabled device, and enjoy the wireless music for Revolution Whether you want Bluetooth convenience for your dock station, through your home-theater system, in your kitchen, bathroom, or bedroom... This is your best choice! There are LED indicators to show you the connection status of your Bluetooth pairing. Specifications: Color: Black, White Dimensions: approx. 4.4cm x 3.5cm x 0.8cm Output: Bluetooth Support file: Bluetooth V5.1 A2DP V1.2 Connector: Equipment with For Apple 30-Pin Dock Transmission distance: Up to 33 feet (10meters) away Net Weight: 10g 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 iPad,For Bluetooth PC, Cell Phone, search Bluetooth devices to find and connect it; Step 3: After successful paring, we can play music by speakers without wires Package includes: 1 x Bluetooth Music Receiver