Amazon.com: VR Headset Controller Compatible for SteamVR WMR Mixed Reality Motion Handle Compatible for HP Reverb G1/G2 (Color : G1 Right Controller) : Video Games
WifiTrax - WMR-10
HowTo] Increase the battery life of WMR Controllers up to ~15+ hours for less than 15$ : r/WindowsMR
Best Buy: Acer Mixed Reality Headset and Controllers for Compatible Windows PCs Blue AH101-D8EY