Suitable for any portable speaker Works with the speaker which has 3.5mm line-in jack and play music from bluetooth A2DP enabled mobile phone and other bluetooth A2DP audio devices.3.5mm line-in jack allows you to play other external audio sources,such as Mp3,Mp4 etc. Specification: Bluetooth specification:V3.0+EDR Bluetooth profiles:A2DP and AVRCP Operating distance:10 meters class II Bluetooth frequency range:2.4GHz-2.4835GHz Weight:80g