Wireless transmitter module performance: Input voltage: USB 5V / 2000mA; Wireless output voltage: 5V / 1000mA; Transmission power: 5W; Transmission distance: 5mm~7mm; Charging efficiency: >=70%; Wireless charging standard: Qi. Wireless charging receiver module performance: Built-in intelligent IC chip, meets international Qi standard, control the charging mechanism for charging more safe and fast. Wireless receiver voltage: 5V / 1000mA; Receive distance: 5mm~7mm; Suitable for all DC 5V digital devices.