Dikom Stone Bluetooth. System type: 1.0, Recommended usage: mobile phone/smartphone, Form factor: tabletop. RMS rated power: 3 W. Connectivity technology: Wired & Wireless, Interface: USB/3.5 mm. Power source type: Battery, Battery type: built-in, Battery technology: Lithium-Ion (Li-Ion). Width: 68.5 mm, Depth: 68.5 mm, Height: 42 mm