1. Fully charge the device before first time use because battery maybe run out after long time keeping. 2. There is overheating protection system installed on the device, it heat for around 1 to 2 minutes and when the tempature is too hot, it turn off automatically. Under this circumstances, you need to wait until it cools down and then restart it by hand. 3. Long power button till the green light on to start the device. Function: Bakhoor burner Suitable:Home/Car/Office Plug Type:USB Regional Feature: Middle East Product name: Bakhoor Incense Burner Function: Adding aroma to the air and atmosphere Feature: Eco-friendly and easy to use Colour:A: Black Material:Resin Package Contents: 2 x Incense Burners 2 x USB Cable 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.