CE Maintenance 1.Risk of explosion if battery is replaced by an incorrect type. Dispose of used batteries according to the instructions. 2. The product shall only be connected to a USB interface of version USB2.0. 3.EUT Operating temperature range: 0 ° C to 40 ° C . 4.The device complies with RF specifications when the device used at 15m from your your body. Declaration of Conformity Shenzhen Huion Animation Technology Co.,Ltd.