Dg-503 Nissei Digital Swr/watt Meter 1.6-60mhz/125-525mhz For Two-way Radios,walkie Talkie, Mobile Transceiver - Walkie Talkie Parts & Accessories - AliExpress
MFJ
MyDEL Nissei DG-503 Digital Display at Radioworld UK
MFJ849, MFJ-849 Digital SWR/Wattmeter GigaParts.com