EC-2017 Heated Eyelash Curle. Features:1.Heats up in seconds.2.Creates long-lasting curled lashes safely and quickly 3.Smart temperature sensor changes color automatically4.Sleek and compact, the curler fits easily in your purse and cosmetic bag.5.1 AAA batteryoperated. (Battery not included). How to install battery:Slide down the bottom aluminum tube and insert 1 AAA battery as guided. (Battery not included) How to use: 1. Remove the cap. 2. Push the Switch to ON position.The heating indicator light is on and the device starts to heat up.When the temperature sensor turns from green to yellow, the curler is ready. 3. Keep the curler parallel to the eyelid and hold the lash with the curler for 8-10 seconds. 4. Move slowly upward, gently press the lash for 5 seconds till it curls up. 5. Repeat the same steps on the lower lash. 6. Use together with mascara makes a better effect. 7. Slide the switch downward to turn the device off after use. How to clean:1. Clean the device with a wet cloth or tissue after each use.2. Do not wash with water.Warning: 1.If the heater is damaged, please stop using for safety. 2.Don't use this device while wearing contact lenses. 3.Remove the battery if you are not going to use it for more than 30 days. 4.Keep out of reach of children. 5.DO NOT disassemble. Beauty Tips How to get better curling? 1.First, curl your eyelashes with the curler. 2.Second, apply mascara to the roots of the lashes by brushing back and forth in a Z way and then brush up to the tip. 3.Finally, curl the lashes for a second time to make for better curling. Eco-friendly Tips: Batteries contain substances harmful to our environment. Please do not throw them away with the normal household waste, but hand them in at an official collection point.