Size: approx. 8.8*8cm;Interface: Micro USB;Standby power: average power is less than 50 mW;Conversion efficiency: greater than 73 %;Transfer distance: maximum 10mm, recommended transceiver distance 2 mm~4 mm;Product Certification: CE/FCC, compatible with QI certified standards;Standards: Qi wireless charging standardSlim 10W Fast Qi Wireless Charger PCBA Circuit Board with Coil Wireless Charging Pad DIY.Input voltage: DC9V1.5~2A, over this range of voltage alarm and stop charging; Output voltage: 9V±0.1V;Charging current: 1200mAh;Charging power: maximum can reach 10 W;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 DIYNote:Due to the hand measurement, there have size error about 1-5mm.Item color displayed in photos may be showing slightly different on your computer monitor since monitors are not calibrated same.