Note: Wireless charging is generally slower than traditional wired charging due to lower energy conversion in current tech. Charging speeds vary depending on your device, Max output 15W.
Situation that a little warm is normal, because part of the electricity will be converted into heat energy and released when wireless charging.
Fast Charging only mean 15W max fast output, not mean that all phone will shows "fast charging” when charge.
Not charging for any watch.

15W Wireless Charging Pad

Specification
Input: DC 5V-2A,9V-2A,12V-2A
Output: 5W/7W/10W/15W
Size: 3.9*0.47 inch
Package included: 1 x 15W wireless charger pad, 1 x 3ft USB A to Type-C Cable, 1 x 15W adapter

Hints
1 Connect power, set the phone down properly, centered and screen facing up.
2 Wireless charger can work with plastic/TPU/rubber cases up to 6mm thickness. Cases made of metal, cases with attachments such as metal ring, magnets, pop socket, cards, grips will obstruct charging.
3 Required that your phone support wireless charge, not work with iPhone 6 6s 7 Plus, Samsung A Series likes A53, Google A Series likes 6a. These not compatible, need to charge with a wireless charging receiver.

Efficient Charging
15W for Samsung
S24/S23/S23+/S23 Ultra, S22/S22+/S22 Ultra, S21/S21 FE/S21+/S21 Ultra,
S20/S20 FE/S20+/S20 Ultra, Note 20/Note 20 Ultra/Note 20+,
LG G7/G8/V30/V35/V40/V50,
Google Pixel 8 Pro/8/7 Pro/7/6/6 Pro,
10W for Samsung
S10/S10e/S10+/S9/S9+/S8/S8+/S7/S7 edge/S6/S6 edge,
Note 10/Note 10+/Note 9/Note 8/Note 7
Google Pixel 5
7.5W for iPhone
iPhone 15, 14, 12, 13, 11 all series
iPhone X/XS/XR/XS MAX, iPhone 8/8 Plus
5W Standard Charge Mode
Google Pixel 3/3 XL/4/4 XL
AirPods 2/Pro, Galaxy Buds/Buds+, Pixel Buds
All other wireless charge-enabled phones