iWatch 4 / 3 / 2 / 1 generation wireless charger 0.35A PC and stainless steel materials charging
 
Charger input: DC5V/1.0A Max.
Wireless output: DC5V / 0.35A.
Wireless charging conversion rate: ≥72%.
Charging frequency: 330 kHz.
Support for Apple Watch 1 to 4 generations.
Material: PC + stainless steel.
Product diameter * thickness: 27.5 * 6mm. Cable length: 1m. 
Weight: 26g.