ROBOT APPEARANCE -Robot appearance makes the Bluetooth speaker look very cute to add more fun. STEREO SURROUNDING SOUND-The robot Bluetooth speaker is a built-in 53mm suspending loudspeaker and 360 closed design create a strong and powerful bass, a thick and pleasing alto voice. HANDSFREE PHONE CALL-The hands-free phone call allows you to answer/reject phone calls hands-free through the Robot Bluetooth Speaker. PLUG MICROPHONE SUPPORT-You can plug a microphone into the robot speaker to sing songs everywhere. POWER BANK-This portable wireless speaker can be used as a power bank to charge other USB devices like phones without conflict.