It's pretty cool and ATTRACTIVE and makes you a star at parties. Fun for parties, shows, rave concerts and festivals.High quality EL wire brings an excellent visual effect and a longer continuous glow time at night. Stylish sunglasses frames WITH CLEARLENSES will give you a sense of style.Easy to use. Single-button design. Press the button on the battery pack to change the EL glasses to light in any one of four modes: steady glow / blinking / FLASHING / off.Perfect for party, outdoor concerts,Night out, birthdays, festivals, camping, raves, Party prizes, party supplies, party favors, Clubbing, Christmas stocking fillers, lucky dips carnival prizes, Easter Party, Birthday Party, Musics Festivals, Rave Parties, 80's Disco theme parties,Birthday , Halloween prizes and toys, goody bag toys, party giveaways etcIndependent battery pack with two 1.5V AA dry batteries can provide the adequate power to ensure a longer continuous light up time (two hours at least depending on your batterycapacity used). The pack and glasses are connected by a short wire. You can easily hide the pack in your pocket, clothing or chip in belt by the clip of the pack.