Model Number: BSPK-A091-S5I-N Brand Name: Tonstep or OEM Key Specifications/Special Features: Big power 3D surround stereo Bluetooth Speaker with 4400mAh power bankMaterial: Aluminum alloy ShellBluetooth version: V2.1 + EDR (A2DP)Support function: big power bluetooth speaker/ hands free / line-in / powerbankOutput power: 20W (10W*2)SNR：≥85dbFrequency Response:100～18KHZBuilt in battery capacity: 3.7 V / 4400 mahWorking time: more than 8 hoursDistance: 10 metersPort: micro USB 5PIN portSize: 171*52*60mm
With 3.5 stereo audio jack, suit to laptop,computer,MP3/MP4 and mobile phone.
Support iPhone, iPad and all telephones which have Bluetooth function