Promote your Logo while Enjoying the Music. Promotional Bluetooth Speaker Functional characteristics : Bluetooth audio input;Bluetooth speakerphone,LINE IN,TF Card Bluetooth Version : Bluetooth 4.2 Bluetooth Profiles : A2DP, AVRCP Bluetooth Range : 10M Output Power : 3W Capacity : 30mAh Speaker : 4 3W Frequency Response : 280Hz-16KHz S/N Ratio : >95dB Distortion :