You can tell from the name that it can wireless charge two devices simultaneously: an iPhone at 15W and a wireless Qi device at 5W. Since it is MagSafe certified, your iPhone can charge at 15W.
Belkin BoostCharge Pro 2-in-1 Wireless Charging Pad – Box Front
BoostCharge Pro Fast Wireless Charger for Apple Watch + Power Bank 10K is probably the first and only power bank in the market right now that can fast charge your Apple Watch with its built-in Apple Watch charger. Of course, fast charging for Apple Watch is only available from Apple Watch Series 7. It is only available in Black.
It retails for S$159 on Lazada or Shopee. But do get it during double-digit sales days as it will always be cheaper unless you need it urgently.
Belkin BoostCharge Pro Fast Wireless Charger For Apple Watch + Power Bank 10K – Box Front