Features: The Mini speaker offers great sound quality with powerful 3 Watt RMS.Playing songs in MP3 format which saved in TF card .Support PC/Ipod/iphone/MP3/MP4/Samsung/Other mobile phones by connecting with 3.5MM jack .Bluetooth telephone function .Bluetooth play .Vibration resonance technoloty360 degree omni-directional soundSpecification:Speaker: double magnetic PC side， 52 mm 4 �� 3 wSound box type: portable bluetooth speakersAdjust way: buttonsPower supply: DC 5 V， dual protection of lithium battery (3.7 V 400 mah)Signal to noise ratio: 80 db st13The distortion rate: --- 0.5% @ (1 KHZ)Frequency rate: 90 hz - 20 KHZAudio interface: 3.5 MMCharging time: 3 hours or so can be filledPlaying time: 2~3 hoursSound box size: 30:60 mm (diameter)， H: 60 mm (high)Speaker net weight: 200G (lithium battery)Microphone :Hands-free speaker available only for the Bluetooth model Package include1 �� Bluetooth Speaker1 �� 2-in-1 audio charging cable1 �� User manual