Micro sized UHF transceiver

If you are after a truly miniature transceiver maybe this will fit the bill? It is also sold via Amazon, but when I looked it said "currently unavailable".

https://www.aliexpress.com/store/product/2017-New-Mini-Transceiver-ANYSECU-KBL-A8-Two-way-radio-Walkie-talkie-Red-Color-UHF-400/1759260_32837238033.html

See also
https://www.ebay.ca/itm/2Pcs-LEIXEN-VV-109-UHF-400-480MHz-USB-MINI-Radio-Transceiver-Small-Sized-Useful/282834195560?_trkparms=ao%3D1%26asc%3D20170803111724%26meid%3Dba290b48893244f89e6d4044f1ab657b%26pid%3D100508%26rk%3D1%26rkt%3D1%26%26itm%3D282834195560&_trksid=p2045573.c100508.m3226