Perfect sound quality Multi- modes playing Aluminium alloy case design Rechargeable lithium battery Album skipping Output Power: 3WInput Voltage: 5VBuilt-in lithium battery spec: 3.7V/500MAHImpedance for speaker:4 ohm.  Frequency range: 60Hz to 20kHzS/N ratio:>80dBTHD:<0.5%Charging period:4 ~6 hoursWorking period:4~6 hoursPower Supply: Built-in lithium battery or USB cableAudio Socket:3.5mm stereo jackAudio Source: PC/Notebook/ MP3/ MP4/Mobile phone, etcWorking temperature: -10°C~+50°CMaterial: Aluminium alloyDimension: 65*58*58mmNet weight:200g

Special Features:                

Multi- modes playing: AUX/TF card/FMAluminium alloy case design, small, portable and fashionableHigh quality audio decoding chip design, perfect sound quality.High fidelity full channel loudspeaker unit design, Treble, Midrange and Bass performance in level of clarityBuilt-in rechargeable lithium battery, with enough capacity, convenient for long-time outdoor journey   Album skipping

Packing information:

Quantity/carton: 50 piecesGross weight: 13kgNet weight: 12kgCarton size: 56 x 39.5 x 23.5cm

Accessories:

2 in 1 USB charging cable/ 3.5mm audio cable for pc/mp3/iPod/mobile x1User Manual x1

Aluminium alloy case design wireless professional speaker