Output Interface: 5V/1A USB Ports: 1 Quality Certification: ce Quality Certification: RoHS Quality Certification: FCC Quality Certification: CCC Output Interface: None Model Number: for Apple watch 4/3/2/1 Compatible Brand: APPLE Type: Desktop Support Quick Charge Technology: No Power Source: USB Input: 5V/2A Material: Aluminum Alloy+PC+Silicone+TPE Output Power: 2.5W Max Size: 72.2*20.4mm Compatible: for iPhone watch 4/3/2/1