Specifications of CAS928 Bluetooth Stereo Audio Receiver Module: Input Voltage: DC 5 V Audio Out: L R G (it must be connected to an amplifier) Receive audio signals from mobile Extraordinary Range 10 meters. Smallest and Powerful Best for any kind of amplifier. Dimensions : 23mm x 13mm x 2mm Features of 5V Dc CAS928 Bluetooth Stereo Audio Receiver Module: Make Any Speaker Wireless, Make your Car Audio System Wireless Converts Speakers into Bluetooth Speakers Allows you to play songs to your speakers directly from your phone, Compact, and Small can be powered with a USB wall power adapter Can buy with PAM8403 Mini 5V Digital Small Power Amplifier Board Applications: car audio conversion, home audio modification  personal DIY Bluetooth audio, electronic project production square dance audio, suburban audio modification Package Include: 1x CA-S928 Bluetooth Stereo Audio Receiver Module In Pakistan