Supported Protocol: A2DP, AVRCP Distance: 10 &（transmit 5 ） Battery Capacity: 300mAh Charging Input Voltage: 5V Input/Output Mode: 3.5MM stereo audio port Compatibility: Compatible with phones and PAD of Android/iOS system, and all audio devices Includes: 1 x 2 in 1 Audio & Receiver 1 x 3.5mm Audio 1 x RCA 1 x USB Charging [Receiver Mode] Receiver Change The Traditional Speakers Into -supported Ones. After Paired, Play Music Wirelessly From Your -supported Smart Phones, Laptop, Tablet And More Without The Hassle Of Cables. Support Automatic Re-connection. [Low Power Consumption] Built-in 300mAh Battery Up To 8 Hours Working Time, You Can Enjoy Wireless All Day Long. Simple Use, No Need To Download Any APP. [ANC Noise Reduction] Support Noise Suppression , Offering You Magnificent Stereo Sound & Wonderful Sound Quality. [ Mode] Is Specially Designed For The Audio Devices (such As MP3, MP4, TV And PC, Etc.) Without Function. You Can Connect The To The Audio Devices Via The Included 3.5mm Audio Plug, Changing These Audio Devices Into -supported Audio Devices, And Making It Work With -supported Headset And Speaker. [Strong Compatibility] Compatible With Android & IOS Smart Phones And PAD, Almost All -enable Audio Devices, And Stereo System With 3.5mm Port.