Ten metres is enough to run behind the TV, along a bookshelf and still go round a door frame. The strip comes as two 5 m reels with a peel-off adhesive back, and can be cut every few LEDs to fit. Choose from millions of colours and a warm white, dim it, set a timer or let it pulse along with your music, all from the phone app or the small remote in the box. It plugs into a normal socket with the included adapter. For indoor use.