Product material: ABS flame retardant material Input: 5V 2A or 9V 2A Output: compatible with 10W/7.5W/5W Apple watch output: 2W Airpods output: 3W Number of wireless charging circles: double coil Wireless charging conversion rate: ≥75 Transmission distance: 5mm Charging frequency: 110-205KHz Product size: 21*8.5*0.8cm Product color: black. white