The 30-pin Bluetooth receiver is designed for Apple product dock stations. Plug this receiver into the dock station, and music will be transmitted from your mobile phone with Bluetooth stereo capability to the dock station. Receiving range: up to 30 feet; in open, unobstructed areas, range can reach up to 60 feet. High sound quality: advanced noise reduction technology delivers clearer audio performance compared to standard Bluetooth 3.0/2.0 solutions. Compatible with Bluetooth-enabled devices such as smartphones, tablets, computers, iPhone, iPad, MID, and other digital devices with Bluetooth functionality. Plug-and-play design requires no external power source; powered directly through the 30-pin dock speaker. Specifications: - Bluetooth version: V4.1+EDR, Class 2 - Bluetooth profiles: A2DP, AVRCP - Frequency range: 2.4GHz - 2.4835GHz How to use: 1. Insert the Bluetooth receiver into the 30-pin dock speaker. It will automatically enter pairing mode. 2. Enable Bluetooth on your device and begin searching for available devices. 3. When the receiver is detected, enter the PIN code "0000" and confirm. 4. After successful pairing, select the receiver from the device list and press "connect". 5. Once connected, the indicator light will flash blue slowly. Color: Black Material: ABS Dimensions: 46 x 37 x 9mm Package Contents: 1 x 30-pin Bluetooth music receiver 1 x packaging Note: Compatible with analog audio speaker docks only (including BOSE series, Philips series, SoundMuse series, iHome series, Time's Music series, DOSS series, JBL, Yamaha TSX-130, etc.). The package includes only the items listed above; other accessories are not included. Due to lighting effects and monitor settings, the color of the item may vary slightly from images shown. Measurement tolerance: +/- 1-3 cm.