Citing foreign technology media thetechoutlook reported that model “EP-QR900” wireless charger has passed the FCC certification and tested the Samsung Galaxy Watch Active in 5W mode.

Samsung currently has a number of wireless chargers in its portfolio, including the Wireless Charging Stand and Duo-Fast Wireless Charger Pad, which according to the FCC certification document is a low-power transmitter under DCD-Part 15 classification – 1705 kHz.
The FCC certification document also provides some test reports for this wireless charger. The charger is equipped with 5V power supply, 5W operating mode and Loop Coin antenna. The frequency range is 143.5 ~ 146.5 kHz, PCB version 1.0, H/W version 1.0 and S/W version 3.6. It is supposed to be a wireless charger specifically for Samsung smartwatches.