1. Blue + White(Dual-light);Compatible with glasses. & comfortable;Does not obstruct vision. 2. Light Therapy 3. Three timing modes:15min,30min and 45min Product parameters: Power supply specification :Built-in rechargeable lithium ion polymer battery 3.7V 300mA Name:Light therapy glasses Max usage time :Blue light: 2H/ White light: 1.5H Charging duration:About 2 hours Charger requirements :USB DC5V 1A External dimesions (L/H/W):185x165x42mm Net weight :65g wavelength :Blue light: 480nm/ White light 470nm Light intensity :Blue light: 400Lux/ White light: 1500Lux Rated power :Blue light: 0.45W/ White light: 0.65W Use environment :-20℃ to +30℃, 15-90% relative humidity Storage environment :-20℃ to +30℃, 15-90% relative humidity Colour:White Material:plastic Due to different batches, there may be differences in product appearance and printed text, which not affect use Package Contents: 1 * Eye Heated Massage Device Kit Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.