Thermocare gel pad is Usable for Pain Relief. Pamper Your Senses And Rejuvenate Your Health After A Long Day's Work How To Use 1 - Insert The Power Cord On The Product To The Socket And Connect The Power 1A - Keep It On Flat And Levelled Surface While Charging 2 - A Red Light (Indicator) Starts Immediately Showing Heating Is In Process 3 - After 7 To 10 Minutes Indicator Switches Off Automatically 4 - You Can Switch Off Charging Before That Also To Keep The Heat Low 5 - Heat Pad Is Ready To Use 6 - Once Heat Pad Is Charged, It Will Remain Hot For The Period Of 60 To 120 Minutes . Take All Precautions Of Handling Electric Gadgets And Appliances Do Not Use.Legal Disclaimer: We request the buyer to please not ask for specific colors. All are extremely attractive colors and the color of the bottle will be sent as per availability. There is no option to choose colors.