Cambridge Audio G2 Portable NFC Bluetooth Speaker, Champagne Gold Connect the speaker to other devices that are not Bluetooth enabled via the 3.5mm input for quick and easy playback.|Add a second G2 speaker to play in true wireless two channel stereo. When paired with a sibling G2, the sound powerfully doubles as does the party!|The G2 uses a high capacity lithium-ion battery that can play for up to 10 hours from a single charge|In addition, the G2 uses intelligent battery management software to optimise life and minimise charging time so the G2 will last all day and all night.|With a built-in microphone the G2 can be used to answer and make phone calls from your connected device.