bullet point 1.High-definition sound quality, support the music playback, built-in microphone, support for hands-free calls 2.Supports voice prompt 3.Supports Bluetooth connection, the 3.5 mm audio input, USB input> 4.offers a stereo,noise reduction effect so that you can enjoy the music very well 5.Note：the speaker major in smartphones，PC computers and MP3/mp4，it can also be used for tv，but you need a aux cable to connect it,if the out put is too big,the sound would be effected. product Details> size: 15.8 * 2 * 2.5 inch material: ABS. Bluetooth version: 3.0 + esr support Agreement: HSP, HFP, A2DP, avrcp output power: 5 w * 2 the laba size: 40 mm * 2 impedance: 4ohm battery capacity: 3.7 V 1800 mah charging voltage: DC 5 v
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