Ultra bright, sound reactive LED wristbands with bright optical flash and ON/OFF switch. Ideal for cycling or walking at night they are also great products for music events and festivals. Available in 6 different colours; Red, Yellow, Green, Blue, Pink and White. How about getting your brand name or company logo to light up? We can even engrave them to allow this! They will run continuously for up to 24 hrs and they have an interchangeable battery. If you wish to mix the colours then it would be 100pcs minimum per colour.