... Pure aluminum case, various shape available Magnetic resonance speaker, punchy bass support bluetooth, TF card, FM radio play ORIGINAL DESIGNINDEPENDENT ... Colour:red ,blue, silver (optional)Magnetic resonance speaker, punchy bassSupport bluetooth.Support TF cardSupport FM radioSpecificationsPower output:RMS 3WSNR:≥ ... batterySize:Diameter 60mm, height 57mm portable Mini wireless G3 bluetooth speaker