From the manufacturer:
3 in 1 Charging Docks Designed for Apple Watch/Cellphone/Tablet PC
Features:
Specification:
Input: AC 100-240V 50-60Hz
Output: 5V/1A*1, 5V/2.4A*2
Material: ABS Plastic
USB Port Compatibility: Specially designed for all versions of Apple Watch (both 38mm and 42mm), and all USB-enabled devices with 5V input, such as iPhones, Samsung smartphones and more.
Package Included:
1 x Apple Watch Charger Stand
1 x Power Cable (For charging stand charging)
1 x User Manual
Please note: USB Charging cable is not included.
Important Tips:
1. Rotate the housing anticlockwise which is marked with an arrow to start cord management.
2. The USB port which is inside the housing provides the current with 5V/2.4A.