Veho M3 Portable Wireless Bluetooth Speaker with twin pair mode. Tweeter diameter (imperial) : 3.81 cm (1.5") RMS rated power: 3 W, Frequency range: 100 - 16000 Hz. Connectivity technology: Wireless, Frequency range: 100 - 16000 GHz, Bluetooth range: 10 m. Product type: Mono portable speaker, Product colour: Black, Product design: Round. Recommended usage: Universal