Product DescriptionHow to use?Power button is on the back.Switch on/off for 3 seconds.Press the power button for one second, select color and change the color mode.It will light up immediately when in dark.Pressing and vibration can be luminous.Power will be off in dark place and no viberation in 15 seconds.Specifications:Led Color: white, red, blue, green, yellow, purple, ice blueQuantity: 2pcsSize : 2.7*0.31 inchLight Delay Time: About 15sSensor: Light sensor and vibration sensorCharging Time: charge 2 hours and works for 15 days.Note:1.Please tear the transparent film before use.2.Please use 5V/1A charger to charge. (Car/Computer/Power Bank/5V/1A Charger)3. Some Scratches on the surface, please tear out the protective film, the cup mat will become smooth soon.4. Make sure the power is full before you use the cup mat5. The weaker the surrounding light is, the stronger the LED illumination is.