Feature:1. [Vacuum Tube] This speaker uses customized vacuum tube, vacuum tube effect, durable, mellow sound, support Memory Card and U disk auxiliary output.2. [With Ambient Lights] High quality bluetooth speaker, external ambient lights, retro design, create a unique experience for you, and perfectly decorate your home.3. [Good Sound Quality] DSP sound processing technology and sound electric integration technology match the speaker structure to release full original sound.4. [Low Latency] Retro speakers provide bluetooth 5.0 wireless transmission technology, high efficiency transmission and low latency, bluetooth stable music playback non stop.5. [Sensitive Speaker] Using quality speaker materials, the sensitivity is improved, the complete sound signal spectrum is extracted, and the shocking sound effect is exerted.Specification:Item Type: Bluetooth SpeakerMaterial: ABSBluetooth Version: 5.0Output: Bluetooth Memory Card U Disk AUX OutputInterface: USBRated Power: 5WFrequency Response: 150Hz-20kHzNoise Ratio: 80dBBuilt in Polymer Lithium Battery: 1500mAh.Package List:1 x Bluetooth Speaker1 x Manual1 x Sound Cable1 x USB Cable