Product Name: Home Theater System Sound Bar Wireless Blue Tooth Speakers Surround Super Bass Sound Bar with Double Diaphragm Model NO.: BS-28B SNR: 81-90dB Sound Channel: 5.1 Cinema Types: Wireless Color: Black Power Range: <300W Structure: Desktop Speaker Usage: Computer, Stage/DJ, Home Theatre System, Karaoke, Radio, Portable Player, TV, Mobile Phone Speaker Material: Plastic Amplification Type: Active Bluetooth: V5.0 Power: 4*5W Remote Control: Infrared Remote Control Home Theater: Key Parts Trademark: OEM Transport Package: Carton Origin: China HS Code: 85182200 Product Description 4pcsX5W Home theater sound bar wireless blue tooth infrared remote control bass speakersModel: BS-28BBattery Model: Lithium-ion battery built-in, with power capacity of 2000Ma/hPower Output: 5W*4pcs, 2pcsRMS plus 2pcs Double diaphragm Working Voltage: 50-300mA DC5vBit rate : 64-320kbps Harmonic Distortion: <0.05% FM:<0.1%Working Temperature: 0ºC-60ºC Music playback time: 10hrs Constantly music playing time:4-6hrs(using middle volume)link: Bluetooth 4.0Frequency response: 100HZ---18KHZFrequency: 2.402-2.480GHzMIC Sensitivity -32db Joint plug: AuxPlay Format: MP3Speaker 5W: imported from UKCharging voltage: DC 3.7V/1ACharging time:4-5hrsTransmission distance: ≥ 15mSignal-to-noise ratio : ≥75dBRated yin reactance :4 Ω Noise Elimination Circuit built in: Provide Noise Elimination functionSupport Freehand call, TF cardSupport docs in format: MP3/WMA/APE/FLAC/WAVSupport FM frequency: 88-108MHZBluetooth music playSize: 550*50*50mm, N.Weight:580g, G.W:650g in boxFeatures:4pcs 5W Special Material designed Sound Bar Speaker Built in , with super-bass and wide range of sound field- 10 minutes Auto-Dormancy designed for energy saving and friend to the environment .-Smart compatible to TV, Computer, I Phone, Laptop, Tablets or I Pad and PSP.-Noise Elimination Circuit built in: Provide Noise Elimination function-Support Freehand call, TF card-Support docs in format: MP3/WMA/APE/FLAC/WAV-Support FM frequency: 88-108MHZ--55cm/21.6inch length, provide powerful bass, clear and precise audio and cinema surround audio, enhance your TV sounds-Switch intelligently according to different audio input diverse Equalizer option: TV, Music, Movie and Default-CE standard