Based on this product's specifications, here are some alternatives and similar models
Headset Accessory NINTENDO ACT/VOL (K1) BEE — volume and action control module
Summary description:
NINTENDO ACT/VOL (K1) BEE is a headset accessory module providing in-line volume control and action/button control for compatible Nintendo headsets and controllers. It serves as a compact remote interface for adjusting audio level and triggering headset functions during gameplay. Suitable for users needing on-cable controls for convenience and quick in-game adjustments.