"Tempo" shape maximizes the sound quality & energy efficiency, dual acoustic chambers &radiators deliver ultimate sound & extreme bass. Unimaginably, if you buy two speakers together, which can enjoy the Surround Sound included Stereo Right & Left Surround. With it you can easily setup a simple yet powerful wireless stereo surround-sound music experience anywhere. Additionally, the two speakers can function independently with each providing full stereo sound from their own source of music, generating an astonishing experience where ever it goes.
Technical Specification:Power supply: DC5V/500mA-2.1A
Battery capacity: 1400MAH
Audio drivers: 2 x (φ40mm,4Ω，3W(RMS)
2 x (φ45mm passive radiator)
Wireless: Bluetooth 4.1 & NFC field communication
What's in the box :1 x Bluetooth speaker
1 x USB cable
1 x 3.5mm Aux Line-in Cable
1 x User Manual
1 x Protective Cap Bag
1 x Non-slip Mat
Warranty:Every I-Venstar Product includes a 45 Day refund, 18-month, worry-free Guarantee!