These glasses are so popular with the teens and young adults. I sell 69% to ages 17-27, 17% to ages 11-16 and 14% to adults over 27. There are three styles available. Each style has 5 modes for each of its 7 colors. Fast and Slow Flash, Steady, and Gradient(each color slowly dims into the next color) (SOLD OUT)Style Honeycomb-the frames are of a honeycomb design 6.7x5.3x1.77cm. Weight 65 grams and have a button on each side to change the mode of its respective side.weighing 6.74 Ounces 6-7hours battery time battery replaceable-CR2032 Button Cell (same as most key faub Style Futuristic Slim-feature a futuristic like design and have a button on each side to change the mode of its respective side. weighing 6.74 Ounces 6-7hours battery time -CR2032 Button Cell (same as most key faubs) Style Futuristic Thick-the frames of these glasses 7.76 x 6.57 x 4.45 inches; weighing 12.63 Ounces-this style is rechargeable equipped with usb cord. Have 1 button(please remove film completely)