Pair & Play - It's that easy! The mobile 20 Watt Blue-tooth speaker is easy to pair with any smart phone, tablet, or other Blue-tooth device. To pair simply press and hold the Blue-tooth button on the PWDBT top panel and make sure the Blue-tooth indicator is flashing, and then select the Device ID "PowerWerks" on your Blue-tooth Device to pair it. The speaker will beep after successfully connecting. Once the initial pairing has been made, the PWDBT remembers the connection, so the next time you connect it's even easier. The PWDBT has a built-in rechargeable lithium-ion battery for up to 10 hours of music on a full charge and works from up to 30 ft. away from the Blue-tooth device.