Veho MR-7 Retro Wireless Bluetooth Speaker. RMS rated power: 10 W Frequency range: 22 - 22000 Hz Impedance: 4000 ?. Connectivity technology: Wireless Bluetooth range: 10 m USB connector type: Micro-USB. Product type: Stereo portable speaker Product colour: Aluminium Product design: Rectangle. Recommended usage: Universal Mobile operating systems supported: Android iOS. Amplifier: Built-in