CW13 Sensible wireless charger 5W flame retardant materials transmission distance 5-8mm charging frequency 110-205kHz1. Wireless charger input: DC5V / 2.0A Max., therefore, you can use it anywhere.2. Wireless output: 5W. Transmission distance: 5-8mm.3. Wireless charging conversion rate: ?72%.Charging frequency: 110-205 kHz.4. Material: ABS + PC flame retardant material, thus charger is safe.5. Finally, small size – diameter * thickness: 100*10mm and weight 62g, so charger is lightweight and portable.