Features: 1.Play MP3 music from TF card, U disk, Bluetooth. 2.Lossless Transmission ? This hifi amplifier adopts an advanced Bluetooth chip to achieve lossless transmission to make amplification wider and more stable. 3.Super Heavy Bass Sound ? Adopting SUPER BASS circuit design to achieve super heavy bass sound to give you a great hearing enjoyment. 4.Small size ? It's portable and can be installed anywhere. 5.Remote Control ? Full function, with number key it can directly control. Specification: Features:_x000D_ Play MP3 music from memory card, U disk, Bluetooth._x000D_ Lossless Transmission - This hifi amplifier adopts an advanced Bluetooth chip to achieve lossless transmission to make amplification wider and more stable._x000D_ Super Heavy Bass Sound - Adopting SUPER BASS circuit design to achieve super heavy bass sound to give you a great hearing enjoyment._x000D_ Small size - It's portable and can be installed anywhere._x000D_ Remote Control - Full function, with number key it can directly control._x000D_ Multi-level Protection - Multi-level protection like over-voltage protection and short-circuit protection ensures the security of amplification._x000D_ Bluetooth Connection - You can pair this Bluetooth power amplifier with your phone or computer through Bluetooth to make it get more music sources._x000D_ USB Input - You can connect a USB device with it to achieve great music amplification._x000D_ Memory Card Input - You can plug into a memory card to play music you like freely._x000D_ _x000D_ Specification:_x000D_ Material: ABS_x000D_ Color: Black_x000D_ Product Type: Digital Bluetooth Amplifier_x000D_ Bluetooth Connection: Support_x000D_ USB Input: Support_x000D_ Memory Card Input: Support_x000D_ Super Heavy Bass: Support_x000D_ Bluetooth Version: 2.1 + EDR_x000D_ Codec: SBC_x000D_ Voltage: 220 V_x000D_ Maximum Power: 50W_x000D_ Impedance: 4 ()_x000D_ Loudspeaker Unit: 133mm_x000D_ Sensitivity: 200 HV_x000D_ Frequency Response Range: 20-20000_x000D_ Remote Control: Support_x000D_ Size: Approx.12 x 7 x 5cm/4.7 x 2.8 x 2.0in_x000D_ Package weight: Approx. 181g/6.41oz_x000D_ _x000D_ Package list:_x000D_ 1 x Digital Bluetooth Amplifier_x000D_ 1 x Remote Control_x000D_ 3 x Cable_x000D_ _x000D_ Note:_x000D_ Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering. PackageList: