... 2.low power,no heat/radiation,long life,thin 3.fast send,good price/quality 4.CE,RoHS ... Working t-shirt: sewing or with velcro2.Twinkling effect:3~8 flashing3.Life time: very long4.Thickness:super thin, ... clothes will be lasted for more than two years.3. Good way to show personality: when join in ... welcomed. colorful el fashional t-shirt (CE, RoHS, 0.15-0.5 mm thick, 80-150 cd/m2, 5000-8000 hours) ...