This 4 in 1 little device packs a lot in it. Smooth and easy to set up and get ready to use. Comes with easy to follow instructions. The bluetooth works great, also functions as a power bank, just plug whatever you need to have charged up and it will charge it up. Comes with a bike holder and usb charging cord. There is a light at the end to be used for a nightlight on a bike etc. Really nice device.