Specification:-100% brand new and high quality-Standby power: average power is less than 50 mW;-Conversion efficiency: greater than 73 %-Transfer distance: maximum 10mm, recommended transceiver distance 2 mm~8 mm-Product Certification: CE/FCC, compatible with QI certified standards;-Standards: Qi wireless charging standard-Input voltage: DC5V 0.5~0A, over this range of voltage alarm and stop charging-Over temperature protection: when the temperature is higher than 60 degrees,-it will automatically stop charging for 1 minute, and then the temperature is lower, it will re-charge.-Over current protection: when the current is over 2A, it will automatically stop charging to avoid damage the electrical devices.Certification: CE/FCC, compatible with QI certified standards; Standards: Qi wireless charging standardPackage Includes:1x Wireless Charger PCBA Circuit Board with Coil DIY