Logitech X300 Mobile Wireless Stereo Speaker, Blue (984-000402) Powerful, go-anywhere sound: Deep bass response with detailed mid and high range in a compact design Wireless freedom: 30 ft. wireless connectivity to Bluetooth-enabled smartphones, tablets and notebooks Calls + control: Adjust volume and manage calls from the speaker or your mobile phone Expansive sound spectrum: Unique angled drivers deliver a wide-range mobile sound experience Extended playtime: Built-in rechargeable lithium-ion battery powers 5 hours of continuous music