Mushroom Shape Bluetooth Speakers, Bluetooth 4.1+EDR with A Suker, Built-in Microphone and Rechargeable Battery, for iPad iPhone Laptop Smart Phone, Can Be Sicked on the Back of the Phone (Black) Bluetooth wireless speaker  Bluetooth4.1+EDR, support A2DP and AVRCP ,provided with the function of audio decoding Built-in rechargeable battery  Approximately 2 hours broadcast playtime (The volume will affect the time) by rechargeable battery with 200mAh capacity Red and blue indicator light reminding  With this function, you can clearly know the status about the speaker that red indicates the status of charging and blue indicates the status of matching Easy to control - Volume up /downCH+/CH- controleasy and convenient to operate The wireless effective transmission distance up to 10 meters(The barrier will affect the distance)