BT 2.1 Bluetooth Audio Receiver Board Starter Wireless Music Stereo For Phone PC Arduino Feature: A excellent Bluetooth receiver board Single-end audio signal output LED status indicator Prevent power reverse connection Supports Bluetooth V2.1 and EDR Supports A2DP protocol Built-in 3.5mm audio jack as well as pair of RCA jacks for audio output Size: 74 x 49mm Application: This receiver can work well together with Bluetooth adapter in your laptop or desktop computer, or mobile phones with Bluetooth audio stream output support. Note: Distance from this unit and Bluetooth transmitter can be up to 10m but please notice that may vary much based on environment. Package included: 1 x Bluetooth audio receiver board BT 2.1 Starter